skysight-inc/HackerNews huggingface dataset:
This is a huge milestone for a very, very interesting and ambitious project. I wish instead of nit-picking about the marketing language in a release announcement, people would take a minute to appreciate just how amazing this platform is becoming. Yes, ok, derby.js and socketstream and nowjs and opa and realtime-project-foo and etc, sure, maybe they are awesome too, but so what? Meteor is incredible, and contributing to this rising tide floating all the realtime framework boats. And that is something to celebrate imho.

To the meteor team: high five, keep it coming, and thank you!
Quick. To the code dojo, to crush down and hustle some new paradigms ninja-style before things blow up!
It sounds like a fairly standard shared key encryption. Basically, each user has a unique private key and all users share a common public key. When the data is encrypted, the combination of the private and public keys creates a number which can be determined only by someone also having valid public and private keys (or an immense amount of time).

Check out this video which attempts to explain this type of encryption: http://www.wimp.com/howencryption/.
I can buy patents but I doubt Apple does an acqui-hire for high double digit millions.
Thanks. I did put in quite a bit of work in finding the best ways to present the data, which depending on how you count is around five- or six-dimensional.

I'll see whether we can work larger RAID configurations into a follow-up.
I saw the following tweet from PG within the last hour and wondered if it was a reference to some tech company launch. Then I came here and saw this story. Still not sure...

@paulg: "Did anyone else see a fireball heading east over Silicon Valley at 7:44? (Meteor?)"
Google announces Android event for October 29th at 10AM ET
Are you trying to give us an idea of what it's like to build an even moderate sized app without transactional consistency and with mapreduce? Because that is what it sounds like to me.
Its all about relationships with people I guess. It reminds me of this excerpt from a psychology book.
"People used to look out on the playground and say that the boys were playing soccer and the girls where doing nothing. But the girls weren't doing nothing- They were talking. They were talking about the world to one another. And they became very expert about that in a way the boys did not"

You can replace 'boys' with 'developers' and 'girls' with 'tech socialites'.
Developers from India can now sell apps on Google Play store
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Except when it's lupus.
Post from Gruber today about Color: http://daringfireball.net/linked/2012/10/17/color-shut-down

> Like I Said, $41 Million Down the Toilet
My main question is how are these keys generated and exchanged? Normal diffie-hellman is susceptible to man-in-the-middle attacks. You can eliminate this by adding public key certificates to the mix, but how would Silent Circle manage these certificates? How easy would it be to forge an encrypted text from an account? Essentially, how does the app verify that the key it is given is legit? So many questions and so little detail.
Is Silent Phone just zfone 2.0?
How We (Unexpectedly) Got 60K Users in 60 Hours
I hope this is just a miscommunication about what is actually stored (salted hash instead of plaintext).
Are you valuing all their employees combined at zero?
Square would have replaced the readers with their own tablet-based terminal: http://www.pcmag.com/article2/0,2817,2411065,00.asp
The secure voice app is ZRTP (they are just using an existing open source ZRTP library). The ZRTP protocol is now an RFC:
http://tools.ietf.org/html/rfc6189

The secure chat protocol they're using is something they developed and haven't yet published. It sounds as if it's similar to OTR, though. TextSecure (an encrypted SMS app I work on) uses a version of OTR adapted to the mobile environment, which is documented here:

https://github.com/WhisperSystems/TextSecure/wiki/Protocol
I've always had this sneaking suspicion that Microsoft bought Skype solely under the direction of the government so that it could be centrally administered and monitored by a vendor that is willing to do the job. There certainly has never been a business case for it that would support the obscene valuation even the first time around. I usually see about 20m users logged in and most of them are probably not active let alone terminating calls to a telco so they represent zero revenue.
PAKE solves the MITM issue of Diffie Hellman, so if they went the DH route, they probably used something along those lines.
You should always assume, that a best effort network fails. Therefore, you should always handle the exceptions ( even in a trivial example).
As people move to these other APIs there will still be a need to script things surely.

Providing a single clean API that can do everything would be a fine "pivot".

Besides I think it's going to be a shockingly long time before we get rid of POTS altogether.
Not exactly like this, but one of the challenges that I had with A/B testing at Pictage was trying to account for the value that was generated through referrals. Maybe a bridesmaid would see a picture, and the mother-in-law would buy.

So certainly part of the value of a customer is the value of the referrals that they generate.
Or not worry about it so much and just go with good enough.
An option is not a default, though, so using Postgres or MySQL absolutely would solve the problem of returning with success before persisting the data.

The contentious area isn't really that Mongo does this, it's because for whatever reason the people trying it don't expect Mongo to do this.
If we can prove to them that they can make more money and have a better experience with Uber, getting several hundred on won't be an issue at all. We've launched taxi in Boston, Chicago, and Toronto with no issues gettings hundreds of drivers.
Http://www.addthis.com/bookmark.php?v=250&pubid=ra-4f7c407403f1443a
Wow, that sounded authentic. I think I just barfed a little in my mouth.
Hard to imagine counting on employees staying
Of course I am. I spent the first 6 paragraphs of the post explaining that :)
I think that it is an atrocity that most companies do such a bad job of tracking from ad spend to clicks to leads to sales to recurring sales.

If you know the LTV of a customer and the acquisition cost, you can scale a profitable marketing campaign basically to the limit of the channel or your cash depending on how fast you turn over money.

Also tracking the lifetime value of clients, you could find that what is an unprofitable channel in the short-mid term becomes profitable after some point down the road, or not at all.

Knowing is half the battle!
IF this is actually true, I can sort of see the fit. Apple is very good at turning pieces into products. Color, clearly, isn't, but may be very good at producing pieces that have value in the proper hands.

I'm throwing this out there to stimulate discussion a bit, and there's a pretty good chance I get downvoted for saying it, but there's an argument to be made that this actually is a success for the patent system. Companies founded on "get a bunch of smart people together and innovate" should be something that we encourage as a society. They create value, and there should be a structure to encourage this to actually happen. I'm not sure that academia should have a monopoly on this sort, and patents are the other current method of doing this.
Open source alternative: Cjdns. http://en.wikipedia.org/wiki/Cjdns
I talked to a few drivers about Uber Taxi when they launched here in Toronto about a month ago. They seemed to love it. Pickups have a rating and verified identity, which is a safety bonus. Fares are pre-paid with 20% gratuity automatically. And they don't have to pay the credit-card processing fee.
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Actually, I found that they use ZRTP from their website. Phil Zimmerman wrote it and he is one of the SC founders. Wikipedia gives a nice overview:
http://en.wikipedia.org/wiki/ZRTP
That guy is the coolest guy I've ever seen. Just chillin' with a rainbow propellor hat...
To be fair, the whole quote was:

> This thing looks like a turd to me. Now, maybe I’m the idiot and the joke’s on me and Color is going to be a huge hit. But my figurative money says that the investors who funded these guys just flushed $41 million in literal money down the toilet.

So the first half of his prediction was correct, color the product was a turd. Actually, a double-turd since their pivot seemed to change the product from manure to guano.

He simply didn't predict what may be a seller's market for strategic patents and their role within it. Which is why he's a journalist and not a VC. His brain isn't devious enough (an neither is mine!).
I think this is explained by Dan Ariely in his paper - "Procrastination, Deadlines, and Performance: Self-Control by Precommitment"

http://pss.sagepub.com/content/13/3/219.short

Procrastination is all too familiar to most people. People delay writing up their research (so we hear!), repeatedly declare they will start their diets tomorrow, or postpone until next week doing odd jobs around the house. Yet people also sometimes attempt to control their procrastination by setting deadlines for themselves. In this article, we pose three questions: (a) Are people willing to self-impose meaningful (i.e., costly) deadlines to overcome procrastination? (b) Are self-imposed deadlines effective in improving task performance? (c) When self-imposing deadlines, do people set them optimally, for maximum performance enhancement? A set of studies examined these issues experimentally, showing that the answer is “yes” to the first two questions, and “nO'’ to the third. People have self-control problems, they recognize them, and they try to control them by self-imposing costly deadlines. These deadlines help people control procrastination, but they are not as effective as some externally imposed deadlines in improving task performance.
For the voice app, it uses ZRTP. Basically, the initiator and responder perform an ephemeral DH key agreement. Both clients then independently generate a "short authentication string" (basically just two English words) from the shared secret they negotiated, and display those two words to the caller.

Both callers then read the two words to each-other, and if they're the same, they know there couldn't have been a MITM attack. In the case where there's a MITM attack, each caller would have different key material, resulting in a different SAS. The protocol uses hash commitment and other tricks to make this really work in practice.

They haven't published the protocol for their chat app's encryption yet, but it sounds similar to OTR. While OTR has some nice tricks for verifying authenticity by using zero-knowledge proofs, it doesn't sound as if they have support for that sort of thing, and parties would have to make a call and read a SAS to each-other over the phone.
For-profit universities and the "free" federal dollars they collect are the very reason why we have exorbitant inflation in the education sector that is incommensurate with general inflation.

Except for the Tier I elite universities, there is no reason for a college education to cost $40k-$50k a year.

What is worse, student loans are the one type of debt that cannot be cleared through bankruptcy, meaning that millions of young adults of our generation will suffer decades of reduced incomes as they try to dig themselves out of debt for degrees that did not result in high-paying jobs.
It's a metaphor. Quit raining on my startup troll parade.
You might check out RedPhone and TextSecure (I'm one of the developers). They're in the Play Store and on GitHub.
Process of building my entry is mostly in spoiler.html.gz. For your viewing convenience, it's also here:
http://uguu-archive.appspot.com/nyaruko/edit.html
Personally, I'd give Apple's management the benefit of the doubt.
This claim about gc seems pretty dubious since gc algorithms tend to take time proportional to the number of allocated objects, not the amount of available heap. So adding heap doesn't slow things down unless you use it. Also, using 10x more heap ought to only make your gc pauses 10x longer.
So this is like Tor but for mobile phones? Very interesting.
No. See (explicit locking is not required to create a deadlock scenario):

http://www.postgresql.org/docs/9.1/static/explicit-locking.h...

Here's a (badly formatted) example:

CREATE TABLE testing (value int, id serial);
insert into testing values (1);
insert into testing values (1);

testing=# begin;
BEGIN
testing=# update testing set value = 2 where id = 1;
UPDATE 1

(now in another session)

BEGIN
testing=# update testing set value = 2 where id = 2;
UPDATE 1

(go back to original session)

testing=# update testing set value = 2 where id = 2;
UPDATE 1

(go back to second session)

testing=# update testing set value = 2 where id = 1;
ERROR: deadlock detected
DETAIL: Process 11571 waits for ShareLock on transaction 2746675; blocked by process 11495.
Process 11495 waits for ShareLock on transaction 2746676; blocked by process 11571.
HINT: See server log for query details.
Nguyen is the Mr. Magoo of startups.
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[update] > http://news.ycombinator.com/item?id=4667217
There are quite a few. Many offer "private clouds" too. If you additionally consider "hardware clouds" like softlayer, Hertzner, etc... there are even more possibilities.
Yeah I read about that. I don't understand why I (as a passenger) would care, though- it's replacing one credit card terminal with another. Except the new one will have a more responsive touch screen. Yay?
Multiple iPad gaming companies doing $10M+ in revs
Was there ever a time Color received positive press?

I remember when they first came out, nobody could figure out how they raised to much capital.
Tor is like Tor for mobile phones (checkout Orbot). =)

These applications have more emphasis on confidentiality than on anonymity.

The type of "onion routing" that Tor employs for anonymity is very difficult/impossible to pull off for applications which require extremely low latency connections, such as a realtime voice application.
Comment voting now shows the vote split
I don't understand this.

Whenever people talk about cutting the defense budget, people bring up DARPA and how much great research is funded through it. But then the same people decry federal subsidization of companies like this when they fail.

The whole point of federal investment in R&D is to invest in things that have future promise but are too Blue-Sky for the market to support yet. For every success, DARPA has a dozen projects that never go anywhere. That's just how that game is played.

People should expect cutting edge like this to fail often. That's the whole point. If companies like this were sure bets, they wouldn't need government investment.
That's a rather pat explanation that doesn't seem to explain things such as the rampant rise of tuition at state colleges and universities.
I think the first sentence is clumsy. "Fancify," really? The second sentence looks fine to me though. "Erudite" is a bit pretentious, but I could chalk it up to irony there.
how can shuttering over half their physical locations affect only 4 percent of their students and just over 5 percent of their staff?
Leader is for me the correct definition of the title.
He never said it was mongo specific
I'm constantly amazed that we don't have "report as spam" for calls and sms yet.

Apple could provide this quite easily, and it would be a huge differentiator.
This is probably the fee they charge the taxi owners. This way, the added cost of their service is covered by the customers rather than the taxi owners.
Not cited in any of the news articles I've read about the bankruptcy is the very nasty patent fight involving A123, Hydro Quebec, and the University of Texas. Some of it is described in this book excerpt:

http://gizmodo.com/5805875/the-knock+down-drag+out-fight-ove...

You can imagine the distraction and uncertainty that this brought about early in the company's history. The parties finally settled, but not until 2011.
This is one of the keys reasons I recently started my new project, Uptano (shameless plug: https://uptano.com), and all servers use dedicated RAID 1 (two drives) with 10K RPM or SSD storage.

The same issue applies to network performance. I've seen very expensive EC2 instances that couldn't even push 50 Mbit/s to the net, while instances of the same type could at least do a few hundred Mbit/s. AWS' answer was always to simply buy even more expensive instances, so less people are sharing, but that's a terribly costly answer.

I'm doing bonded (802.3ad) 2x1 Gbit/s connections on all servers, because that's what I wish EC2 had.

Multiple customers, with highly varied workloads, sharing the same physical server hardware is simply a fundamentally flawed idea. IMHO, it only makes sense to use a VPS for very small personal projects, where you don't want to justify ~$140/mo in server costs.

EC2 was a really novel thing and it brought lots of great technology to the scene, but they made a few fundamentally wrong choices.
Looking at the title, I thought for a moment that Apple tried to patent some color %) They did already patent rectangular shapes after all ;)
I've had Chicago cabbies sometimes use Square instead of the card reader. They tell me the card reader costs them 5-7% (too many middlemen) while square is 3%ish

I happily pay with Square to give the guy more money for the service. I pay the same, he gets more and Square gets more business. Seems good to me.
What's it a metaphor for?

Crushing things?
Considering it likely has double digit millions of dollars left in the bank, sounds low.
Not really. This still has a central server.
In general you can't hoist the length check out of the loop because of the possibility that the length might change during the loop. Proving that the length doesn't change during the loop is quite difficult; in general this requires alias analysis.
> The fix as described seems to just check the Host header for suspiciously-formatted information. Is that also enough to prevent other wrong (but well-formatted) Host values from being used?

No, it's not. As the release notes say, "Some attacks against this are beyond Django's ability to control, and require the web server to be properly configured"; see https://docs.djangoproject.com/en/1.4/topics/security/#host-... for details.
Their rejection rate by women? Seriously, we keep seeing these brain dead patents. If the patent examiner doesn't understand linked lists, they shouldn't be examining the patents!
October 16, 2006 (article date) is also not to be confused with October 16, 2012.
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Who are Twilio's competition? I know of textmarks, which serves a lot of sms traffic, but there doesn't seem to be much else competing in this space.
When I try to make an entry for 'hackerne.ws' (using same selector as news.ycombinator) it saves but then resets the regex after I visit the site and it doesn't work. Any ideas? Otherwise, I'm a fan - will keep using.
Plivo. Really the only one. And they're awesome from what I've seen of them. Volume pricing from the start too.
It seems in english speaking country there is a need for flashcard system too.

I want to share my view on "flashcard" app.

I am a chinese coder, who love learning and reading english.
To help people learn english words in long term(for school Exam,SAT,GRE, or just for work), I have made two web app.

1. jianbing.org （running for 2years, shutting down for bad UX, 20K users）
2. http://rollingword.com ( alpha, Launching, without rollingAlgorithm shipped)

To make things simple, I have a simple philosophy ： Our brain is a distribute network system just like DNS!
so our memo brain have two parts
1. Area like Local DNS (8.8.8.8) , which is fast(fast CPU) but memo unit have TTL (time to live). It just a cahce with small latency.
2. Area like Authority DNS( Like Router53) , slow CPU, Big database hard drive.It like computing strategy, coding, Learning.

We can not remember a word because it is not in the Local DNS(maybe in the Authority DNS area but it is a so slow CPU), or it is expired.

So our algorithm(calling rollingAlgorithm,which make word/cards rolling ) is to copy a Local DNS ttl table by collecting user test feedback;

how to test?

first user can get a list of cards/words， , by rollingAlgorithm(based on Actuarial Science, which used to calculate people life time).

the learning and reviewing is in a row. we show user a "pile" of card ,if user hit his cache , user click "Learn",we say he remember the word , send back a high score to rollingAlgorithm;

if cache missed,user click "fail", he will relearn the word and the word is queued in the row and will come up again (if missed again,come up again),send back a low score to rollingAlgorithm;

we collect user memo performance while they are learning!

we make your memory rolling, at best performance.
They've had free Uber TAXI in Boston since Tuesday morning (until Thursday 8pm) and it's been awesome. I ubered home yesterday and to work this morning.

I'm pretty sure the idea was to get the cabbies onboard. And it worked: both cabbies I used were in love with the extra cash and said that they and all their friends would use Uber from now on. They had amazing revenue nights! We'll see what happens when the traffic dies down, but I'm betting it was a smart investment on Uber's part. I wonder how much it cost.

According to one of the cabbies, they tried charging $200 for the iPhones when they initially rolled out, and it went nowhere. Then they gave them away for free, and a lot of cabbies got the phones, but the traffic was too low so they just left it in the glove compartment. Now they're on board. Well done, Uber!

I wonder if they paid the regular Uber drivers for the reduced traffic during the promotion...
The company I work at now doesn't make the distinction and has plenty of coders who "do both." I also do both.

"Creative" is still a bad name. When your application evolves and the names of your services no longer match their business purposes, it's a good practice to update the naming to increase clarity. The same should be true of your departments and job descriptions.

Keeping a name even though it doesn't make sense just because it's traditional and an industry standard is pretty lame. I doubt you'd find much support for that kind of thinking here.
Hmm, it shows "4-EBS RAID" getting around 2.6x speedup for
4k writes. They don't say what RAID configuration they are using, but it sounds odd.

A 4k write has to be synced to all the disks unless they have a <=4k stripe size AND are using RAID-0
AND are using stripe-aligned IO ops. It's also
possible they use 4k writes to cache that end up forming large dirty blocks which the OS then syncs as larger I/Os.
But that would be measuring something else than the benchmark claims.
Not to mention:

"Do I need a Facebook Account to use Color?

Yes, your Color account is directly linked to your Facebook account. Everything you do on Color, including photo taking and LIVE video Broadcasting, will be represented on Facebook "

Ugh...
I think I maybe once saw a cab in Brooklyn, but it turns out it was just a yellow car driving like a maniac.

(99% of taxi trips in NYC start or end in Manhattan. There are no cabs in the outer boroughs and they will only take you there if you get in, close the door, and get out your phone to call 311 if they refuse to take you. I don't even try anymore.)