That's basically how it works. Everyone buying one game is one way to do it, or everyone can just put in equal shares of money for however many games you're getting. You don't have to be signed into the gameshare account, but you do have to have the account activated on your ps3, so you can't remove it. Your CC info and address can be removed from the account. What I do is sign in, change the password, add my cc info, add the cash, remove my info, and change the password back. As for joining a group, you can look through the last several pages of the thread to see if anyone is looking to start a group or you can post up that you're looking to join a group with information as to what you're looking for.