Domain Name Auctions
There are plenty of Domain Name Auctions on the internet today. I have used a few! Here are a few that I know of or have used in the past.
The Domain Name Auctions seem to differ slightly, whether it be the Commission structure, User Interface, Domain Parking option, or quality of the names that are listed on their site. However they should all be checked out and you can choose which one you would like to use, or maybe all.
I intend on adding more Auction sites as they become relevant.