I think this thing is glitchy. Every couple of days, it tells me a friend has unfriended me and then re-friended me shortly after. This has happened easily half a dozen times now - always the same friend. I asked this friend if they'd been unfriending and then re-friending me or messing with the settings on their account, and they say they have not. I believe her - I get along well with this person - but unfriend finder keeps popping up saying she's unfriended and then re-friended me.
Additionally, when clicking the 'help' button - nothing happens. It's completely unresponsive.