- Author website (a general website about you as an author, which could be personal or strictly professional)
- Book website (a separate site created for each of your published titles)
- Agent's/Publisher's website (request that your agent updates his website to include your book after publication)
- Author blog (again, depending on your audience, this could be more personal a la Sarah Dessen or informative, such as this blog)
- Book review websites (submit your book for consideration at sites such as: Goodreads, etc.)
- JacketFlap (children's/YA publishing blog reader/networking site)
- Technorati, (online blog directory with networking features)
- Facebook (social networking site)
- MySpace (social networking site geared towards a younger, school-age demographic)
- Twitter (micro-blogging site with the ability to network)
- Linked In (professional networking site)
Please comment with any important online market avenues that I have left out.
UPDATE (03/28/09): Jane Smith wrote a great post on how to write a press release.
First-time picture book author, Kim Hutmacher, created a terrific article on steps to maximize the publicity her debut manuscript.