Probably the best I've seen is the same idea applied to anonymous wikipedia edits: http://www.lkozma.net/wpv/ http://www.lkozma.net/wpv/ Not sure if this has be

Probably the best I've seen is the same idea applied to anonymous wikipedia edits: http://www.lkozma.net/wpv/ http://www.lkozma.net/wpv/ Not sure if this has been posted.