Circular Grunge Pattern

Saw this on the jobsite and instantly knew I'd struck gold. Now I'm posting it and sharing it with the world. Feel free to take it and modify it as much as you want. All I ask is that you link back to me if you modify and repost. If you use it for something, credits would be lovely, as would sending me a link to your finished product, but I'm not sticky about it.Enjoy!