I also was interested to see what's going on; it sounded intriguing to me. "I want to see what some of the projects are. Maybe I can find a side project to work on!"
Then when I saw that I wasn't going to get squat without giving first via signing up, closed it. I only wanted to take a minute or two here in between tasks, and signing up is a commitment to me.
Sounds irrational, arguably, but here's my rationale: My email box is currently flooded by dozens of emails from countless little things I've signed up for at some time in the past under similar situations. Periodically, I go clear them all out and try to unsubscribe, but it's like pulling weeds-- a project that never ends.
Mentally I was prepared to give the site a minute or two, but the requirement to sign up before I can even see what's up is a deal breaker to me-- I wasn't planning to spend that kind of time.
Then I make a liar out of myself by coming here and typing for several minutes. In any case, I love the idea, and I bet a lot of other people are, like myself, looking to connect with other people that want to give and take on various kinds of projects.