Hmm, this is a tough question for me. As much as I'd want as many people to consider friends as possible within the community, it takes a lot for me to get to the point of friendship. Heck, after all these years on this game, I've really only had 3 or so users I'd even consider to be "friends," and I still only talk to 2 of them outside of the game. So I'd usually wait through a couple of interactions before accepting a request, but not too many, since in order to deeply get to know a person, you'd need an easy way of communication, which the buddy list functions include nicely.