First thing I did was disable all email notifications. Not a trivial task: I had to turn off like 30 different types of notifications one by one. However, these sly bastards just kept coming up with new notifications, that were turned on by default. So I kept getting emails from facebook, even though I thought I had disabled all of them.

That was my experience a year or two ago. At some point I deleted my facebook account, because the value I got out of it wasn't sufficient to tolerate all those annoyances: changing email notifications, constantly changing privacy settings and policies, annoying ads, annoying messages from people I barely know...