I had to laugh when I saw one of the people who bullied me, in the newspaper as a success story. The Flying Spaghetti Monster does indeed have a sick sense of humor.
I liked the 10 and 20 year reunions, even though I hated high school. wft, did I miss 30? Anyways, 37 years on, the facebook groups of my high school and neighborhood are actually quite interesting, for a few minutes. Facebook interface sucks though, try following a thread with 150 entries and you just want to toss the monitor (I was going to make a Second City reference, but all these young'uns...). Rather than robbing nostaligia, it seems to to have inflamed it.
The alternative is seeing your friends at funerals. I skipped the one last weekend, haven't even wanted to see what was posted on fb about it. It's hard to be the same age as a parent when they died. But now I know all my online meanderings will spin anti-chaotically forever.