A Question.

So, a question for those who are making money off their art - and even those who aren't - how and where should I be promoting mine? I've already got a blog, a Twitter account, a Flickr account, two online stores, etc. Sold a decent amount of stuff over the past few months, but sales have pretty much petered out, and most of the sales were to family and close friends. Where should I be pushing this stuff? What (ideally cheap or free) venues am I missing out on?



(Just for clarification, I'm primarily looking for ways to drive traffic to my existing online stores, as well as to this blog.)