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I'm the cofounder of Codecademy. Unfortunately, there aren't comments allowed on the author's blog so I'll comment here (I'm emailing him as well so hopefully my comment gets posted to his blog).

We've received a lot of feedback on our initial courses page redesign since a soft launch on Saturday. We're working on making it easier for our users to find what's important to them and to discover interesting courses among those available on Codecademy.

I'd love to hear everyone else's feedback - we've been making incremental changes since the launch of the redesign (we work all the time) and we won't stop until it's incredibly easy to find the right courses. As the author mentions, we're starting with gradual changes. Thanks for your patience.
Weird. I just won it three times in a row without that happening. How reproducible is it for you?
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Thanks, Karunamon. We most definitely do care about what's going on the site and that's why we're dedicating so much of our time and attention to making sure the user experience reflects that and is easy for users.

I'd love to hear any other feedback you have. Feel free to email us.
You can be doing what you love and still have a crappy job with low pay and no hours.
I'm all for finding the "best musicians in the world", but what really shits me about Idol and similar shows is that they find technically brilliant singers, but they can't write a song if their life depended on it. The same with many brilliant musicians I know - they have the technical chops, but have no basic idea how to structure a song other than chorus-verse or maybe AABA.

There's got to be a market for musicians who know how to write.
> the drug manufacturer mislabeled the MDMA bottle as Methamphetamine, a much more damaging drug

It's not even so much that (comparing two drugs like that doesn't really make sense). It's that the dosage administered was far more than what would be comparable for methamphetamine. 6 mg/kg of one drug is not necessarily comparable to 6 mg/kg of another drug... 300 mg of methamphetamine for a ~110 lb. person over 9 hours is absurd - the maximum prescribed dose of Adderall (d-amphetamine) is generally 40-60mg per day, and that's only for individuals with high tolerance (or very severe problems such as narcolepsy). These are oral dosages, mind you, whereas the study used subcutaneous injection, which amplifies the effect of the drug further. Then account for the fact that methamphetamine crosses the blood-brain barrier more easily than its cousin that lacks the methyl group, and you start to wonder why only one of the five monkeys died.

Even before they realized the drug mixup, the Ricaurte, et. al. study is so flawed that it's almost laughable that it was published in the first place. Your study is intended to simulate the environment of a club/rave? 20% of your subjects died after what you considered to be a moderate dose, and you didn't think that was cause to question your methods? Raves may not be the healthiest places in the world, but if real life were anything close to what those data suggest, the morning after a concert or rave you would find the floor literally covered in dead bodies.

I won't even get into the absurd conclusions that they draw from their measurements themselves, since this is HN, not a neuroscience forum, but suffice to say that any college freshman in an introductory neuroscience class should have known better. It's as if they copied and pasted the analysis from another study and inserted their own data into it - that's how nonsensical it is.

The retraction for Ricaurte, et. al.: http://www.pages.drexel.edu/~ls39/peer_review/Ricaurte_retra...

(The original study is linked from the retraction page; I'd emphasize again that the study itself had enough other flaws in it that it should never have been published in the first place, even if the drug mixup had never been discovered).
A larger number of Canadians also died from tainted pork from maple Leaf bacon

This is especially surprising since God explicitly told you not to eat pork almost 3000years ago.

Remember kids, pork and shellfish are evil - just so no.
We've heard comments from both sides of the table and we're working as fast as possible to create something that's easy to use for all of our users. Thanks for bearing with us.
Thanks. There's a number of app discovery services focused on mobile(chomp and crosswa.lk), which is why I chose to focus on webapps first.

Located in San Mateo, CA.
Command them to start building the giant death ray immediately, then to wait patiently for further instructions.
Thanks for pointing out what you do like - we're working on placing more emphasis on tracks.
You have 400,000 people who actively use your product? I imagine a bunch signed up thru TC, and the initial press, but how many people use it day to day?
This is probably the correct answer (focus 100% on improving the product).

The product is at a state where people like the idea of it so they sign up en masse -- but I'm not sure the site lives up to the expectation yet.
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Optimizing for happiness will bode very well for Fandalism.
4ormat rebuttal
Good question. That's what I'm struggling with right now. There really is no way to determine this accurately at interview stage - a smart person will always figure what kind of answer you're looking for. One way is to have them describe in detail what they're doing at their current/previous positions - if they mention legacy code/doing support or maintenance, ask for more details. See how they're describing it - matter-of-factly, or in a negative way.

However, there really is no good way to do this, other than to hire somebody for a trial period and have them do actual real world tasks. That's what I try to do most of the time, but unfortunately it's not always possible. If someone has better ideas, I would love to hear them.
Pud - when I look at your site, I see a marketplace for video music lessons. A tonne of people would pay $1.99 to learn a Radiohead song on piano, or get that perfect 'wub wub' sound in Reason. There's similar stuff on YouTube, but it's low quality and unreliable, and discovery is hard. Create a marketplace and you'll attract the best of the best.

Prerecorded video would be perfect at first, but you could happily expand to live, streaming lessons. I'm excited already. What do you think?
We have a designer on staff (as another commenter mentions, the excellent Allison House - http://allisonhou.se). Design is a very big priority for us and this redesign is the first of many we'll make - it's an incremental process and we're focused on improving our designs until they're just right.

I hope you'll bear with us as we fix this one.
Thanks for your support, twog.
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Thanks for your feedback, ramatgan. I'm the co-founder of Codecademy. I'd love your feedback - can you email us?
It's not just the user it's the cost to society.

Look at the Stanley cup riots last year - can you imagine the carnage if they had all been out of their skulls on BC-bud rather than beer.
Oy, my company pays interns. If you don't want to get paid, I have some spiffy projects that I would love to hire someone for free to take on.
I'd love to hear your feedback a bit more in-depth, jsavimbi - as mentioned, we do indeed have an in-house designer and design is a big priority for us. We'd love to hear what you think we can do better. Feel free to email us - contact (at) codecademy (dot) com. I'll read every email.
Around 40,000 uniques per day. So 10% log in daily? That seems reasonable for a site like this. I guess Facebook is at 50% but that's super insane rare.

Otoh Fandalism is kind of like LinkedIn in that I'm not overly concerned with user engagement -- it's more about building the database of users and content (so they can meet likeminded musicians, and one day I can launch new services that take advantage of the large database).

Or at least that's what I've been telling myself.
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Hi monkeygus! Thanks for the comment!

Yes, that has floated around as an idea. Totally not out of the realm of possibilities! We think that eating out is such a big problem for people with dietary needs, that it often affects their social life very negatively in many ways. This is the big challenge we are after.

But we are definitely on the lookout of our users telling us what they want to see in Eatfindr and following their needs. We've been live for a couple of weeks now, so our selection database is still growing, but we have over 15,000 gluten-free restaurants from across the US, as well as over 1,000 humane & organic restaurants.
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The grammar of this post really detracts from the arguments.
Taking a stand on something publicly takes courage so I don't want to be too dismissive, but respectfully, Michal, I disagree.

I'm taking the Javascript courses and I barely noticed the page had been redesigned. (That's good design!) I had no trouble finding and walking right into what I wanted. The layout is clear, logical and looks good. The 'start here' tag is probably superfluous because it isn't needed. It's obvious where you should start, depending on what you're after. I immediately got that the HTML course material had been added, but really it seemed like not much more had changed.

I think overall, your article was bad advice.

The slight misalignment of a few elements should be corrected, but actually, why bother - NO ONE but someone with a bone to pick would notice something so trivial. Build, measure, learn - don't obsess over UI pedantry.

Michal - I looked at your proposed redesign and found it cluttered, hard to read, and confusing.
Codecademy - here's a good example of when to ignore your vocal users.
We got rejected too.
We are building http://www.pajap.com . A DIY service that allows you to build 100% native mobile applications with a drag n drop designer without a single line of code.
Apps made with pajap don't have to bee installed on the phone or updated.

Videos
http://goo.gl/WkVZ8 (sample app)
http://goo.gl/Fhmbl (making of)

Enough with the promotion...

The rejection means we don't get to lean back and watch the magic show.
We have to try , run , try again and create magic ourselves. We'll do that.

Best of luck to all YC2012ors accepted_or_not.
Maybe there's value in the fact that this was an Onion service that was targeted specifically -- are the Feds trying to send a message about Tor? Was this whole operation hinged on the PR or was there some strategic value to taking out the group (assuming your analogy to a local pharmacy holds true, which I don't necessarily believe)? Perhaps the Feds were scared because Tor was involved and wanted to strike before the defendants wised up and went totally dark with more anonymous payment schemes (anyone using PayPal obviously has no reasonable expectation of anonymity), knowing that PayPal et al only keep records so long?
My first thought: Make the free app- with ads. Then provide an ad-free version for $0.99.
Nothing brilliant here, at the moment.
I agree and would argue that these points apply even more to Exec because at least with this idea, you are only handling a single task (cleaning people's houses).
or a market for bringing them together
That's a good idea. There are people on Fandalism who are unbelievably good musicians, better than pros. I should ask them to do online lessons or whatnot.

(of course, just because they're a good musician doesn't mean they're a good teacher. but i could come up with guidelines to help them teach..)
A music selling platform sounds like a pretty good idea for this I'd say. It could be a one stop shop for searching for music, interacting with artists, and buying music. Might be interesting. Take some notes from Myspace Music, Bandcamp, and Ultimate-Guitar.
Even if you limit the comment, it is still there on the side, which means you are still distracted. I would attack the problem from an UI and UX standpoint. I know there is a website or app (can't remember the name of the website) that shows the comment ON the video as the video plays, kinda like subtitles (you can turn it off). Nonetheless, it's still too distracting for me.

Here is an idea you can play with: wikipedia for videos. So sometimes after you watched a video, you want to know EVERYTHING about it, and usually the comment are crap for factual information about the video. What you can do with that technology is allow users to learn more about the video when he or she pauses or when the video ends. Lots of possibilities here =).
It may also be respecting a territorial boundary, real or perceived, of the person whose job it is.
The chumby was, altogether, a disappointing device. While it was "hackable", its capabilities were too limited and you could not boot the stuff to do anything offline. I bought one out of hope that something interesting would come out, but it was not really worth it, retrospectively.
Jsavimbi - without specific examples of what you're talking about, I call trolling.
You're setting up a straw man here.

Group A--believes the best way to help the poor is by allowing the free market to lift everyone, and allowing private charities to fill the void.

Group B--believes the best way to help the poor is by taking a small percentage from everyone who can afford it to guarantee basic human necessities for everyone who can't.

You can debate the effectiveness of the methods of Groups A and B all you want. And that's what you started to do, but then you went directly to questioning the motives of Group A.

Since they don't agree with your methods, you've decided that libertarians believe that the poor get what they deserve and have no interest in helping them. You've moved them from the "wrong" category to the "just plain evil" category.

If libertarians really believed that the poor get what they deserve, why would they donate to charity? If your model were correct, one would expect self-professing libertarians to donate considerably less money to charity than other idealogical groups. I can't find any statistics to back this up.

>'mankind'

You have enough sample data to associate the word "mankind" with libertarians? Or are you more likely to take notice of the word's use when engaging with libertarians?
Classical raytracing by itself is highly unrealistic unless you also implement an add-on physical-based rendering-equation-solver such as Path Tracing or Photon Mapping. The first one beginning highly noisy and "converging" to photo-realistic over a looong time -- the second being only as realistic as the number of photons your hardware can manage.

Now without such a physical-based rendering-equation-solver, realtime raytracing of "simple scenes" (couple of spheres and boxes) is doable today. The more complex your scenes get (even with acceleration structures), the more you need to lower your viewport resolution. Your high-end desktop GPU can then handle raytracing for a low-end "mobile" resolution such as 320x240 or whatever. But your low-end mobile GPU probably can't. Also for fully accurate antialiasing you'd need to render at 2x your resolution and downscale.

tl;dr: realtime raytracing of simple scenes is feasible, realtime photorealistic full-screen antialiased raytracing of complex scenes isn't and if current tech development trends continue, won't be for another decade perhaps.

I don't see "we're really close to pulling it off" because as GPU flops and caps happily increase, so do unfortunately screen resolutions. In realtime raytracing, we're always lagging behind and always have to compromise: (1) high resolution, (2) antialiasing, (3) complex scenes, (4) photo-realism -- for real-time speeds, pick any two.
I can't help but think a lot of people find fault with this because they don't want to believe that it could be possible to start a business this way because they didn't think of it first. But you know full and well that whatever employment law and tax compliance requirements exist can be overcome and overcome fairly easily. Why look past the entire story to point out the few things that could fuck him up?

And to those talking about the lack of scalability, etc. I ask you: how many businesses have you started that employ people? How many businesses of this kind have you run? If the answer is <1 you are not qualified to make those assumptions.
I edited my comment to be more neutral towards Methamphetamine; I wasn't aware of the significant dosing differences and that's important.

The real problem is the way the studies were conducted. They didn't test hair samples to verify whether the participants used MDMA, much less control the environment it was taken in. The largest study I referred to that was done by Harvard Medical was done on people who had never tried the drug before, were not at raves taking drugs which could not be verified for purity (amongst other problems like dehydration and hyperthermia), and they verified their study through hair samples.
You seem to be pretty interested in being as bored as possible with this discussion.......
> That turkey wasn't ready to come out of the oven.

Like development, design works best by iteration. The overall concept isn't bad per se, the implementation looks to be haphazard and needs style, tone, ease of use and continuity.

> what you think we can do better

Iterate, iterate, iterate.
Well thought out response.
It looks like the downvote police are out in full force - but I'm not backing down. The redesign is strong. The only concern I have is how the current layout will grow with the addition of more courses.

Michal - why not permit some comments on your blog so we can bring the discussion to you? You made some strong statements that deserve a rebuttal.
Mexico drug plane used for US 'rendition' flights: report
(AFP) – Sep 4, 2008
MEXICO CITY (AFP) —

A private jet that crash-landed almost one year ago in eastern Mexico carrying 3.3 tons of cocaine had previously been used for CIA "rendition" flights, a newspaper report said here Thursday, citing documents from the United States and the European Parliament.

The plane was carrying Colombian drugs for the fugitive leader of Mexico's Sinaloa cartel, Joaquin "Chapo" Guzman, when it crash-landed in the Yucatan peninsula on September 24, El Universal reported.

The daily said it had obtained documents from the United States and the European Parliament which "show that that plane flew several times to Guantanamo, Cuba, presumably to transfer terrorism suspects."

It said the European Parliament was investigating the private Grumman Gulfstream II, registered by the European Organization for the Safety of Air Navigation, for suspected use in CIA "rendition" flights in which prisoners are covertly transferred to a third country or US-run detention centers.

It also said the US Federal Aviation Administration's (FAA) logbook registered that the plane had traveled between US territory and the US military base in Guantanamo.

It said the FAA registered its last owner as Clyde O'Connor in Pompano Beach, Florida.
Extraordinary rendition has been harshly criticized since it began in the aftermath of the September 11, 2001 attacks in the United States.

link - http://afp.google.com/article/ALeqM5j6QonBKKMo2gw1e3ql-xUcQE...
Fun lesson in line with some of the comments.

I worked with an app co that stuck on millions of users and never earned a dime in revenue.

While the CEO was going manic about potentially running out of money, one of the advisors (who had recently sold for $100m+) emphatically insisted that we NOT generate revenue.

His reasoning?

The minute you turn on revenue you eliminate the "story" about the revenue potential.

The result?

A beautifully large exit to a entrenched and old school player.

Hook. Line. Sinker.
OK so all of you who submitted the application on-time have received your response email. Does anyone know when I should expect a response if I applied late? Will I even get a response?
Thanks for your comments, calydon. I'm the cofounder of Codecademy - would love to hear your feedback via email (and on HN).
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YOU'RE RIGHT. I'M HORRIFIED.
While the idea sounds good/okay, it wouldn't be ready for prime time yet. That is, because

a) HQ microphones are not a very usual thing to have and they are not cheap and

b) because lag will probably kill the experience, even with a very good connection, a delay of, say, 150ms will be noticeable when playing music relying on reacting to each other.
I don't care much for alignment. I think it's nit picking for the most part.

The simple list format you had before was much easier to understand than the new design.

The new design does look prettier at first glance though, but it just becomes frustrating once I try to actually use it. It's very unclear which course I should take first. I get no sense of prerequisites. Different types of activities (ie. projects vs lessons) are mixed together.
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Kickstarter abuse: $20k for a game made for free in RPG Maker (ETA Q3 2013)
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While not necessarily "attacks", BitLocker will help home users against data theft from the loss or theft of a laptop.

Apple offers a full disk encryption variant of FileVault for every Lion user for this very reason. Thanks to Lion, I'm able to track my laptop and can remotely nuke the drive (with, granted, some big caveats) and, if the computer's not communicative, I at least know my data is encrypted behind some level of password protection.

And I was able to turn it on through a quick series of sheets, one of which helped me set up an escrowed recovery key that's encrypted with keys only I know and stored with Apple. Should I not trust the encryption process, I'm able to opt out of escrow entirely.

It would have been wonderful to see Microsoft acknowledge that everyone can benefit from full disk encryption, not just "pro" users.