A long time ago I came to realise, or rather accept, that people come and go. There comes a point where there is little point setting wrong expectations that friendships can be maintained when (normally due to changing circumstances) people end up moving in different circles. Then if a friend does end up in contact again for various reasons, intentionally or otherwise, no-one need feel embarrassed. Each accepts people come and go; and 'catching-up' is still a good thing to do as a one-off.
Though, it does seem due to social networking sites like Facebook, My Space, Linked In etc that everyone any of us have ever come across in our entire lifetime could get back in touch with us. What are we supposed to do with thousands of friends, most of whom were barely friends of friends and whom we cannot remember?
Since the family house is going to be sold soon; I've been packing up my few possessions (there have been many a tidy-up before to reduce what i own to just 1 satchel or 2 apart from clothes) and finding fantastic things: pen pal's letters (i can barely remember what a letter is now!), swimming certificates, pens bought on school trips, photos from primary school, school projects, contact details of people on group trips I took and so on. Weird to think how much has been achieved so far in just 25 years, how many people have come and gone. Nice to keep some memories, though I am not entirely sure.
A lot more still to come, presumably, though the memories of the future might be some what greater since there are so many more emails/photos/videos/documents and other tangible evidence of relationships nowadays. The good news is most of this stuff is virtual -can be taken anywhere easily and cannot be lost thanks to google/yahoo's fantastic online servers :-)
My room is currently a mess; only a few more nights in a bed I've slept in for 22 years pretty much. All that is left is to ask: Does anyone want to volunteer to scan in hundreds of photos going back 25 years, name them and tag them?