Abstract art or painted over graffiti?

I've taken a series of pictures of walls that have blocks of painted over graffiti on them. They look like modern, abstract art to me. I've posted one set over on my flickr site. You can go there to view them all:
http://www.flickr.com/photos/picturegirl/sets/72157628296745071/show/

Stencil Love

Here's a little reminder that Valentines Day is coming up. Be sweet to your TV-head. (These stencils were seen around the South Lake Union neighborhood last year. They've since been painted over.)