That's an amusing signature. Though I have a little trouble reading the yellow. Would work better if you provided a constant background colour (through CSS or something) so that all of your text colours would be readable at all times.
But it's nice to look at none, the less.
Gonna give you a 7 for your signature. The text isn't placed that well, and the credit line seems somewhat "too present". I'm not a big fan of the text either.