Though I'm not yet published in fiction, Judy Bagshaw's (of Writer2Writer, where I do a monthly book review) article, Chapbooks: Nifty Little Promotional Tools, shows writers how to promote your fiction through the use of chapbooks. Now I'm thinking of how to promote my non-fiction/freelance writing in the same manner. Really good stuff.
http://www.romancewriter2writer.com/chapbooks.htm
Happy promoting,
Beth