[grotm001]

I was about to use it for several projects when I realized I have no idea who I'm going to working with on the projects. Is it 1-on-1 all the time?

[jmonegro]

Well, your request for work gets sent to all the relevant subscribers (i.e. if you need a developer, to all the developers on the list).

The ones interested make it known and then you can get in contact with them and decide who you wanna work for.