Another "I don't see how it's useful to me" vote here. I look at the tagline and I think, "How long can that last?"
"A place for geeks to share what they've done, who they did it with and connect with great companies and communities"
Okay - so I'm trying to work out the arc of a user's involvement based on the above statement. If all a "geek" ever does is trivial coding/work, then I could see them being an active member. "Today I wrote a loop!" and tomorrow's post is, "Today I solved a bug". That sort of involvement is pretty much how a beginner programming person would interact with a community, right? For guys like you and me, we work on problems that take months or years. So let's say I join, and I make an intro post: "Here's what I've done." Now what?
I'd ask the OP: what does "connect with hackers" mean to you? You've asked/mentioned it multiple times but I'm not quite clear what it means to you. Given the tagline of that site and my having made an intro post, I don't see where it goes.
Are there "great companies" trolling the site looking for "guys like me" to hire? I don't need that. Or are there "great companies" hiding in the background who desperately want to buy my services? Are there "great communities" on the site? That's what the tagline implies. And I don't get that - is Geeklist one community or multiple ones? There's just nothing on the home page that makes me want to join. To see anything at all, it appears I have to login with Facebook/etc.