User blog comment:Sannse/Don't Feed the Trolls/@comment-4839035-20120914214324

I don't block trolls unless they continue the vandalism. I usually just revert it and move on. I personally think that leaving them unblocked actually is better, as it shows that you are paying less attention to trolls, and they can also return and edit helpfully.

Of course, if a troll makes more than 5 or 10 bad edits, I will block.