Here's what I do when I am working on my freelance stuff.
Liquidlibrary.com has hired me to do that grungy floral art. I really love the freedom!
Sometimes they send me the liquidlibrary magazine so I can see where some of my work has been used, which is really cool!
The first one has been in the top 100 downloads for a VERY long time - It was #1 for months.
The second one was also in the top 100, especially around Valentine's Day.
The 3rd was in the top 100 for a while, I don't know why, I don't like it too much.