I don't know why people are getting so worked about the voting for sotw.
The reason there's 3 votes for the same person over 2 hours might just be a coincidence that they logged on the forums to vote in a close time proximity.
I would like to vote for Signature 3 for this SOTW. Although the other submissions are very well done especially 6, I feel that the 3rd entry has the most graffiti feel to it. The background helps make the graffiti feel stand out and it also has a grunge-ish look to it. Graffiti art usually has complicated strokes that make the words not easily distinguishable. The sig feels like something I can actually see in the walls of a street somewhere. I agree with Desi though the the paint dripping would have probably been better if it was black or red.