IOWGeek on "[Plugin: Shareaholic | share buttons & related posts] Code 400 Error"

I have this plugin installed on a number of sites, suddnly they are all showing this error when the facebook button and other buttons are clicked {"code":400,"message":"Bad Request","date":1391030517,"data":[{"base":["Could not persist request: #<ActiveModel::Errors:0x3ee9f171>"]}]}

http://wordpress.org/plugins/sexybookmarks/