Create your own Pollock [Friday Flash Fun] and some decent art -related content , utilties and blogs as well on ArtReview.com
Art Dorks. (slightly NSFW art)
Linkfilter, an occasional source of MetaFilter material, takes community weblogging to a new level, granting experience points for participation and requiring contribution points to "keep one user from hogging the whole site on any given day."
"Ah, the vibrant interaction of electronic conversation. Isn't it beautiful? In a word: No." A pessimistic take on "community."
Blogger is the answer. Portals suck. "Community sites" suck. The always-excellent NUblog crew think Pyra has the answer -- communities of Bloggers focused on specific subject areas.