For example,
If I give rs2k id info to provider or agency & they contact the site,
Does rs2k give them all my file info?
Or just let them know that I check out?
Curios of how much of my id info is passed on.

They will use it to check you out.  I don't think they will give your info to a provider, they will just tell an inquiring provider that as far as they know, you are ok for them to see.  That is what they are there for, to allow you to see providers without having to give up your info to several different providers.

Swim