I removed 90 names. Mostly they're people I met in passing when I was new, and never heard from them again. Mostly they're people I really don't know at all. It's annoying when I need to talk to specific people so I have to page through my huge 'friends' list.
Anyway, if anyone got the boot, (I'm not sure if it tells you or not), it's nothing personal. But I don't use SL for chatting, really, certainly not in PM, and there are people I *really* need to keep contacts with one there. So yeah, it's 'business'.