Yes, I use microjob websites, I'm a seller (check out my signature). At the moment I have accounts on 10 to 15 different sites and I made at least one sale on six of them.
Of course, I get most orders on Fiverr, but SEOClerks is great too.
There are A LOT of these websites, at the moment I have more than 90! in my bookmarks. I'll write a blog post with a complete list one day.