I love the idea of making it easier for people to find one another to collab on things. How will you keep out recruiters, though? Seems like they always end up on these things and start increasing the noise.
Stopping recruiters from messing with people on the site is one of the big reasons we use Facebook - we can block anyone who abuses the system easily, and potentially block the companies using those recruiters. If we make the stakes high for companies abusing people through reckless recruiters hopefully we can change how companies think twice about hiring them. We also built in some simple triggers to make reporting abuse super easy, and we monitor how people are using the system closely. Hopefully in the future we can watch for suspicious behavior patterns based on what we learn.
Thanks for asking :)