Business
VistaPrintThe Art List - Monthly e-Newsletter and searchable database listing upcoming Art Contests, Art Competitions, and Opportunities for visual artists and photographers.
Stamp-Connection
Galleries and Art Associations
Supplies
Dick Blick - The best place for one-stop online shopping for artists.
Frames by Mail - Good frames at a great price.
Framing Supplies - The best, most accommodating people with whom you'll ever do business.