Rollback question Hello I have found your user page because you are an administrator who grants rollback privileges I am performing academic research and I am particularly focused on usage of the rollback feature I have imported en wiki dumps into MySQL for analysis and flag RBs by parsing revision comments for the automatic comment left by RB edits My question In February 2009 and the months preceding it about 200k RBs were being performed a month Beyond that usage of the RB feature seems to decline sharply in September 2009 I show only 1k RBs Can you help me understand this Did the automatic revision string change Did the use of anti vandalism bots with their slightly altered RB strings which I don t try to parse become so prevalent that no one does it manually any more My current research has found no reason for this 200x change and I hope you can help Of course your help will aid my research which in turn will help the Wikipedia community in combating vandalism