Being able to and Friends is a nice feature.
Problem is there is no facility to add a note to remind you liked/disliked them!!
( I play some poker with PokerStars, and the ability to record thoughts on players one meets is a REALLY useful feature!!)
It would especially be useful if one could have a "blacklist" of players! For example, those who bail out half way thru a match cause they are not winning - leaving us to stew for 5 minutes!!!