[davidu]

I use StackOverflow. I've posted questions and I've read lots of responses.

I have no idea what the badges, karma, etc. are. For me, it works quite well. In fact, the only mildly confusing thing for me was that I had to use some OpenID thing to login the first time.

Think about that. Their value prop to someone coming in through Google or posting a question is simple and the barrier to entry is very low.

[GFischer]

I've also posted questions and read responses on SO, but I believe I still haven't figured out how to "use" StackOverflow.

My first experiences with the site weren't too good: I tried to upvote a comment (I mean, there's a big fat arrow to the left of the comment!), and then I tried to answer the question and I believe it didn't let me either...

[Document]

I don't see a private message option (http://news.ycombinator.com/item?id=30088, http://news.ycombinator.com/item?id=75407), so I'm replying to your most recent comment to ask: Did you ever find the story you mentioned at http://news.ycombinator.com/item?id=1386010?

[GFischer]

I didn't really look for it.

If you want to I'll try finding it :) (it should be on my PC somewhere, I don't usually delete those things)

Edit: I'll put my e-mail on my profile, sorry people for the offtopic.