Read the rest of Brian's artist tips over his My Art Space Blog. He's also involved with the online art galleries at My Art Space and New York Art Exchange.
If I could give just ONE tip to an artist looking to create an online presence it would be to create your own website, with your own domain name, on your own web host, built by yourself. If you're too cheap to have your own website, you probably aren't that serious about being an artist.
If you're only presence online is with a free service (Blogger, Geocities, etc..) or even an online art gallery that charges a monthly fee, you're cheap and you don't take your career as an artist seriously. I'm not saying don't use free services or online galleries as they're very useful networking tools for artists, but they should come after you have developed your own online portfolio WithYourOwnDomain.com.
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