You can block anyone but your friends from seeing your profile, so only add people you know and trust!! All the 'zombie' and 'vampire' nonsense pisses me off, 6 months ago they didnt have all this application crap, it was so simple, and easy to use, everyone loved it. Now 95% of my friends are annoyed with it, but obviously won't stop using it because everyone does. In a years time there will be a new version no doubt and this fad will wear off (or I hope so at least!)