Oct 15 2008 Hundreds of thousands of incredible Adobe Photoshop brush sets are all over the web. Due to this phenomenally vast amount of Photoshop brushes available, you can now add patches of dirt, rust, floral effect, swirls, mold, oil stains in your artworks and photos to give them an aged, damaged, dreamy or any look you want. Without further ado, we present 1000+ high-Resolution Adobe Photoshop brush sets that will be perfect for any project you may happen to be working on. Important: Licenses of every brush set varies, so be sure to check that information before using them.
Brushes | deviantART
nico-brushes on deviantART
Abstract Brushes 13 by ~Ghost-001- on deviantART
Added 30th Dec 2009: Been busy the past couple of weeks creating a new Grunge Wordpress Theme, this will be free to download soon. This new Wordpress Theme is created using the brushes and images featured on my Photoshop Brushes site. Also been working on some twitter Icon design ideas, will be adding more goodies including more free textures to the PSBrushes site soon. Follow me on twitter for the latest updates on what I'm doing