Depends upon how quickly you desire to sell. If you're in a hurry, sell at the current offer. If you can stand to wait a bit, put up an ask around the last price. If you have the time to wait, set your ask to a bit higher, and see if someone will come up to you. Or you could split up your bitcoins into some combination.
So the default offer will sell pretty quick? The default price is the last ask price. Or should I go a bit lower if I want to dump them quick?
Also, is it automatic or do I have to approve it?
Thanks for the help.
I believe the default is the last sale price, but in order to sell immediatly, set your ask to where the current highest bid price is. That is literally a current standing offer someone has made, waiting for someone else to come along who needs the cash quickly. The sale would happen before you could pull your index finger away from the mouse.