My communication has sadly dropped off. I don't contact my parents often though they visited last year (first time I had seen them in 6-7 yrs). The rest of my family I have little contact with except my little cousin who is on msn occasionally. I'm quite detached from them all now, sadly I should say, but then I was never one much for family when I was in the UK.
Some friends I have hardly spoke to in years, several years between emails but we were and I think still are close friends, they just either don't use email much or we don't call each other because of cost (I know very cheap these days too).
Probably the worst thing about living abroad for me is not seeing friends and family. Most of my friends were early 20s when I left the UK, so be quite odd to see them now at 30. Some visit Thailand, but there are quite a few I don't expect to see again until for a few more years yet.
On the other hand a friend from home moved out here a few years back, and another is due out to stay this year, and met a lot of good friends and people close enough to call family in Bangkok so it all balances out I suppose.