We have a Friends list where we add people we like and we can view their blogs and what games they have signed onto but what about people we don't care for and people who stabbed us in the back, I have been on Tengaged for a few months now and its getting hard to remember all of the people I shouldn't trust, We should have a separate list (doesn't have to be public) of our enemies and maybe a note section for adding information like people who work in premades a lot or people who hold up games that way you can check before joining a game to see if you might get stuck with an a-hole 
http://www.tengaged.com/game/24355