I'm a cs student and I've watched video lectures as well as attended live lectures. Just like live music and recorded music, there's a place for both to coexist. From a student's perspective: Pro-live: I can ask questions I'm more inclined to pay attention I have to get out of bed I meet other students I meet professors the audio and video quality is (usually) better Pro-recorded: I can schedule lectures according to my life, instead of the opposite I have a wider selection of professors and lectures to choose from (let's admit it, some professors just suck at teaching) I can pause when I want I can skip the boring parts I can repeat the confusing parts To sum it up, I think recorded lectures are a good supplement to live ones, but far inferior as a replacement.

Just play online games against other people - starcraft 2 for example. Don't know about endorphines but I get heaploads of adrenaline from 1v1 ladder games.

I disagree. The language is very good, with a few cute oddities. If it's written by an adult, they have put a great deal of thought and work into this. The content is very complete, accurate, and to the point - but with at least one blatant error (which is not regarding teenagers' habits, but rather a technical issue). Since the subject matter is teenagers' habits, this gives every indication that the author is authentic. The style gives no hints of being written by an adult, and every hint of being written by a teenager.

Sure there are polls and surveys, but why spend money on that when you can get just as good* information by having an otherwise useless summer intern do it for you? They didn't need this report, but they got it and realized it was a good, concise report touching many very relevant issues (the twitter part emphasised in the title/summary is just one of many good points made). I, having recently been a teenager and currently living with one (my brother), can identify with, and thereby attest to, much of what he writes. *) Polls and surveys on teenagers' habits have limitations. First, you don't get information that you don't specifically ask for. Here you get everything you could wish for, without having to wish for it. Secondly, polling and surveying teenagers is likely to give you unreliable data anyway, for a bunch of reasons. While polls and surveys would certainly get you more quantitative data, I doubt it would give you better data. If they were to do an extensive survey based on this report, to gather numbers to back up the assertions made, that would probably be a survey of fairly high quality. But without this report to provide detailed insight into the motivations and habits of teenagers, a team of analysts wouldn't know what to ask for, so they'd have a much more difficult task ahead of them. So you're absolutely right, there are ways to get more quantitative data, and they didn't need this report, but that doesen't mean it's not a very good report, and relevant to a lot of people's jobs.

You didn't specify what kind of bleach or at what concentration. I bet hydrogen peroxide in fairly high concentration would finish them off.

Of course I don't care about them either, no one on the internet really does, but I care about trolls tossing shit in every which direction. If they catch these trolls and break their fingers, the world will be a better place for it.. until they regenerate.