I built something to help HN users network together. I can't promise it'll bring you work, but it'll help you connect with other members of this community without much effort on your part.
I was talking with another kismet user and they too said out of their matches I was the only one that ever reached out to say hi.
I hope it gains popularity because I think the idea is great. I wouldn't count on it though to find a job.
Experience is going to vary.
I compare it to real-life networking events: the majority of people you talk to aren't that interesting or helpful, but you have to talk to them to find out. Kismet just lets you do it without leaving the house :)
However, one thought I have is if the user doesn't fill out pros and cons, what good is making the match? They either don't need anything or have nothing to offer. Perhaps match with other users that also put nothing?