I found this great tip that is worth trying:
Do you have a small item in your shop you can afford giveaway? If you have a decent size twitter following - say 300+, a tweetaway is a superior means to drive traffic to your shop and your blog or facebook fan page. This is a very inexpensive way to introduce new folks to your store, just in time for holiday shopping season.solsistershandbags.com, Solsisters Studio Artisan Handmade Purses: Tweetaways, Nov 2009
Click on Solsisters Studio link above or here to read more!