It's also the laziest, most destructive to new content and most coarse grained approach. ) Seriously if someone's not going to take the effort to see if there's some good contribution or use the diff on an edit before deleting it and the previous 5 edits en-mass then they should leave it to someone who is willing to take the time and effort and save pissing people off by just dumping any and all contributions. If someone adds a whole page of information and they make one typo: that's not a reason to hit the revert button I don't think. A better (more constructive) approach is to fix the typo instead. At any rate: that user has a history of just hitting revert because someone updates content and needs to learn to either use the discussion forum (without editing out other people's comments) or the edit functionality. I personally don't know how they find it easy to find the undo button, ) the wiki UI is pretty good at hiding that functionality away )