Some places worth visiting.

Art Biz Blog: Art Marketing secrets, resources and motivation from Alyson Stanfield
Art Daily: The First Art Newspaper on the Net. Established in 1996
Artbreak: A great online gallery with a truly international membership.
Artforums.co.uk: A forum for both professional and amateur artists. Well moderated and well subscribed.
Coxsoft Art News: An art blog maintained by Ian Cox. Worth checking out.
Daily Painters: I am not a daily painter yet, but one day I hope to be.
Daily Painters Marketplace: This is a collective blog of many daily painters who each post here every day (or almost).
Empty Easel: At EmptyEasel you'll find all types of art and painting tips, including oil painting tutorials, drawing techniques, and general art advice, as well as articles on famous artists, historical art movements, and contemporary artists. PLUS, EmptyEasel has ins
Imagekind: This is a Print on Demand (POD) service. They do good quality work and have a well run website.
Saatchi Online: A great place for artists of all kinds to get exposure.
Society of Canadian Artists (SCA): A national, non-profit artists organization dedicated to promoting the visibility and stature of the visual arts in Canada.
Stuckism International: The home of the Stuckist, or Remodernist, movement. While I don't support everything on their manifesto, I do sympathize with a lot of it.
The Most Wanted Paintings: Two crazy Russians try to establish what the general public really wants in art by means of a series of surveys.