User blog comment:Da Nerd/The hell is this?/@comment-1762932-20130519134820

Ah. That would be my fault. I restored a talk page a couple of hours ago and thus restored all the edits of a bunch of unregistered users, hence the giant list above.

And yes, it was a case of sockpuppetry. But the talk page in question is three years old, so it doesn't make much difference.