Ratings

How am I supposed to rate people?
Alot of questions here now, sorry, but i thought it would be easiest. My questions are 3)
1) Rating someone a low rating for things outside the game, chat, wall, pm, sitters etc. Is this not ok?
2)Rating someone extremly high without anything supporting a high rating in the game. Ie. all five to deadbeats who never joined a game. Is this ok?
3) Am I supposed the try and rate people and give them 5's or am I supposed to rate people and try and have an avarage of 3?
Some thoughts on numero 1) I do realize there are some problems to prove the reasons behind the rating but if this is overcome I only want to have your thoughts about it in generall.
Alot of questions here now, sorry, but i thought it would be easiest. My questions are 3)
1) Rating someone a low rating for things outside the game, chat, wall, pm, sitters etc. Is this not ok?
2)Rating someone extremly high without anything supporting a high rating in the game. Ie. all five to deadbeats who never joined a game. Is this ok?
3) Am I supposed the try and rate people and give them 5's or am I supposed to rate people and try and have an avarage of 3?
Some thoughts on numero 1) I do realize there are some problems to prove the reasons behind the rating but if this is overcome I only want to have your thoughts about it in generall.