A search for Gmail on eBay shows there are currently 47 auctions selling free e-mail accounts for Google’s new mail service currently in beta testing. News.com reports $61 bids on some of these listings.
If this practice bothers you, the only e-mail address listed for feedback is email@example.com.
[Update 6/9: Please do not e-mail me asking for Gmail invites. If I do not know you, and you came in off of a search engine, I do not plan on giving any out.]