I exploited this about 5 years ago. (I think it was called "Startup News" back then, though!)

http://news.ycombinator.com/item?id=27615

I think you need to set "showdead" in your profile to see this. It got killed pretty quickly, but netted me ~150 karma which was amusingly nontrivial back then. And as a byproduct, I think I became the first "public member" to get a glimpse of Arc, which was closed-source at the time. I won't disclose how (since I haven't asked for permission to share the details) but it was pretty much one of the happiest days of my life, for some stupid reason. I was young and giddy and felt like I'd just won something special.

To give you an idea of how ancient this is, check out the id of the thread -- only #27,615. Man, time flies when you're watching a community grow, eh? It's like watching a child mature over years -- into an increasingly-annoying version of themselves while slowly getting fatter and fatter over the years, of course. (I kid, I kid.)

Bonus: I just now noticed that I'd gotten into a debate with Paul B in that thread. Hah. I was too cocky back then... I should have been listening and asking questions, not talking!

Man, I miss those days so much. I never knew how rare they were until they were gone. Like, my girlfriend (now wife) and I went on vacation, during which we prototyped and launched a whole webapp in Rails 1.0! Who does that? Not me, anymore -- At least, not until I lose my day job like a bad case of music. Makes me wonder if I still have my old "hey, I'm 18 and ignorant of my own flaws!" level of productivity...

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EDIT: Oh, look. I have the attention of the majority of HN. Allow me to now exploit you:

To whomever has read upto here: you hereby implicitly agree my EULA, in which you swear to enjoy each of your scientific pursuits with intensity and to your fullest degree; and sometimes even to a dangerous degree, if the mood carries you thus. Additionally, you agree to never allow an employer, family member, or any other authority to break your intrinsic spirit; for they have no means of dominating your spirit except that which you subconsciously allow them. You shall be true to yourself and to your own principles, regardless of society (though in privacy). You shall hereby refuse to believe any scientific statement as "true", however benign, except those in which you alone have proven to yourself to be true, by your own hand and evidence. (Though it doesn't hurt to check out what other people have to say on the subject, from time to time; in fact, it turns out to often be a more valuable course of action, for the careful analysis of a close friend can often reveal subtle flaws in your process and in your logic, while occasionally forcing you to re-evaluate your core reasoning for choosing that process in the first place, which always leads to the path of learning and thus improvement and satisfaction.) You agree to eventually die with no regrets. Let no one impose themselves upon your judgement without merit. You shall endeavor to enjoy life to the fullest extent of the law (where applicable), and to realize that money is merely a means, not an end unto itself. In your spare time, you shall research that which is impossible, but intriguing, in order to always have something to strive for, thereby improving your skill and your spirit. You shall follow your curiosity wherever it leads (but keep both eyes open for signs of danger).

Most importantly: thou shalt enjoy every week, else thou shalt fix your life's situation regardless of how immutable it may seem.

Go -- build something out of passion. Right now!