Free plugins for Photoshop & Illustrator…
Some great free open-source plugins for Photoshop and Illustrator. On a side note, here are some good Photoshop Grunge Tutorials from Smashing Magazine.

Internet Marketing Handbook at seomoz.org
The Internet Marketing Handbook is a free resource that contains almost 100 tools and learning resource that help to master Internet Marketing. An awesome resource at seomoz.org!