Paying members can upload a small 40x50 picture (which is called icon) to their profiles. Icons are shown next to the player's name on many important pages - game pages, discussion boards, private messages etc.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)