Today is a day of reckoning for potentially millions of Facebook users — it’s Quit Facebook Day. The formal Facebook revolt was announced about two weeks ago amidst the growing debate over how Facebook uses and protects its users’ private information.

So far, just over 27,000 users have “committed to quit” Facebook, a figure that is statistically insignificant when compared with Facebook’s more than 400 million users. In response to the growing outcry over privacy concerns, Facebook made extensive updates to user privacy controls last week. But is this enough for the Howard Beales of the world?

When we last asked Mashable () readers about their reasons for planning to quit Facebook, there was almost an equal split between users who claimed that they didn’t trust Facebook with their personal information and with users who said they had no intention of leaving the social network.

Not me, although I am paying much better attention to my privacy settings…