Isn't in ironic when an art thief gets more pageviews in a day than you do... When she's taken your own artwork..?

Sketchfu artists, visit her, check her gallery, she loves you so much that she wants to be you.

Seriously though, just check for your own artwork, even if it does feel like somebody is deliberately wasting your time. It's worth it to take care of the little problems now.
Stay classy!
And happy Valentine's day, by the way.