Domains123 (Popularity: )
http://www.domains123.com Sells domains across many categories and allows visitors to list their own domain names free of charge.
FineE (Popularity: )
http://www.finee.com Offers short and keyword domains. Also provides domain news and registration.
Gd5 Domains (Popularity: )
http://www.gd5.net/ About 50 domain names for sale, including 3-5 letters, generic domain names, and foreign language names.