lexipixel - 1:49 pm on Jun 13, 2011 (gmt 0)
I stripped all my info about a year ago, but kept the account for experimenting with web development features and to occasionally check on my teenager's online socializing.
On the rare occasion I do login to FB - I am always very quick to browse then log out as I find it very annoying when I forget to log out and see my info appear on another site that uses Facebook connect.
Zuckerberg is a scary dude in terms of his willingness to take liberty with people's personal data and his total lack of respect for user's personal privacy concerns.
Another factor in dropped accounts may be the loss of "coolness" it had when it was primarily teens and college students -- many of them DON'T want to see their parents or other 40-50+ year old relatives on FB -- or more likely don't want those relatives to see aspects of their private lives they divulge to "friends" on FB.