The sheer number of them intimidates me so much that what do I do instead of writing them? Displace with silly internet things that are actually less fun than writing emails. And fiddle with my LJ friendslist, because I have too many virtual friends as well as too many real friends. I've cut a few people, mostly Support people I don't really interact with these days, plus a few people I met at social gatherings, and liked, and never quite managed to form a relationship with by the expedient of reading eachother's journals. Nobody got removed because they have offended me or because I don't like them. (There's a constant drama-free defriending amnesty in operation here, by the way; I am absolutely not going to take offence if my journal isn't a regular read these days.) Of course, then I went and added a bunch of new people I've been intending to get to know, so I haven't made the situation any better.
I have a feeling that what I need to do is set up "appointments" to talk to people in real time, phone or IM, at least for those who like that sort of communication. I am much better at finding the motivation to talk to a friend for a couple of hours, than at finding the motivation to ignore the shiny internet and write emails for the same sort of period. Does anyone have any good suggestions for being organized about this kind of thing in the face of geography?