We have school reunions but we have Friends Reunited in the UK. A web site formed into message boards for each school and year group in the UK. So far it's been the catalyst for triggering divorces, affairs, blackmail attempts, paying back long held grudges and outing gay teachers. Oh yes and sometimes they connect long lost friends who are usually living somewhere more exotic than you or who are much wealthier than you. Still end up going back though.