User blog comment:Sannse/Don't Feed the Trolls/@comment-452-20120914004713

All good points.

One other thing worth mentioning is when quietly removing their vandalism, trying not to leave any trace behind.

When deleting pages, or just undoing an edit, it's best to remove the default message - which may include part of the vandalism and their username - and just replace it with the word "vandalism".