The forums listed above are good places to sell domains fast, but you are effectively selling to domain wholesalers who won't pay much for names that aren't premium or have little/no traffic.
Sedo.com and Afternic.com both are more likely to match end-users to your names (higher priced sales), but you'll have to be more patient than selling on a message board or an auction site like eBay. Afternic does have the
Bazaar if you want a faster sale.
