I actually don't mind it being taken down. Here's my reasoning; many people will use the same "name" on several boards, ( maybe it wise, maybe it's not ) even the same avatar and signature. What can happen with this is that say one member of a board takes issue with another member, ( sometimes one or both get suspended or banned ). Sometimes one party gets disgruntled over the whole ordeal and decides to follow the other around in stalking them cyberspace, hassling them and making a general nuisance of themselves.
Sure, many search engines will turn up a few individual member entries on messageboards, but without a members list, it is not as easy for bots or others to troll.