Facebook blackout

A Facebook group calls for a one day Facebook blackout on december 15th. This group has a quite strong momentum as it is reaching 900.000 members, 700.000 members planning to « attend ».

Why? A protest against the Facebook administrators: « Friends account deleted, limited in sending message or poking, stupid new layout ».

How many members will this group reach? Is a one day really relevant? Will this change any thing?

Probably not as it looks more as many other groups creating a short term buzz.