They are being offered through the website GenericDomainSales . The website does not have any solid contact information and the website ownership is hidden behind whois privacy. In situations like this, it is best to be cautious about purchasing the domains until it can be confirmed the seller is actually the domain owner. It appears there is a connection (but unconfirmed) with GenericDomainNameSales.com and also Todd Reum.
The website offers the email contact address as sales@GenericDomainSales.com
(list removed 6-11-12)