I was reading the Straight Dope and was mildly amused at the question about a flea circus. Somehow this reminded me of a flea market - a place where entrepreneurs set up tables to sell their wares.

What is the origin of the word flea market? What other names do people from your part of the world use for this concept? The only one I can think of right now is bazaar - I know it's stolen from Turkish - but I know it to mean a sale, in a gymnasium or outdoors, where ladies (from a church, say) sell crafts and baking to raise money for something.