As Lindsey Beyerstein writes on Alternet: 

So far, nobody is alleging that the ban was politically motivated. The Facebook Terms of Use stipulate that Facebook is for personal non-commercial use only-that line is blurry for people like Blackadder who effectively make friends for a living.

In fact, Facebook is full of professional activists and organizers plying their trade openly. These organizers come from across the political spectrum. Facebook hosts thousands of politically-oriented groups. It seems odd that Blackadder would be singled out for the content of his profile.

Apparently, it’s not uncommon for users to get banned for adding too many friends. The tech blog Scobelizer reported last year that Facebook engineers imposed a 5,000-friend limit on all users because the system isn’t designed to handle such large sets of contacts.

But as Beyerstein wonders:

[T]he question remains: Why did Facebook kick Blackadder out, instead of just regulating his friending? By disabling the account, Facebook has deprived Blackadder of a potentially valuable contact lists and whatever else he may have uploaded.

(We’ve got an AFL-CIO Facebook page—sign on!)