This person is actually drawing on other people's artwork, and claiming it as their own.
The really odd thing is that the thief watermarked the work that she stole.
I guess she doesn't want anyone else to take credit for the work she is wrongly taking credit for.

Here's an animated gif for comparison.
The original doesn't have a watermark.
[link]

StarRevolver7:
[link]

Actual artist:
[link]

I love this one.  You can see where she drew over the signature.
animated gif:
[link]

StarRevolver7:
[link]

Drawing posted March 6 2011:
[link]

Here's an animated gif for this one.
The original doesn't have a watermark.
[link]

StarRevolver7:

[link]

Drawing posted November 29, 2010:
[link]


One addition animated gif:
[link]


StarRevolver7:
[link]

Drawing posted January 1 2010:
[link]

actual artist's gallery:
[link]