Re/Code, the new site from Walt Mossberg and Kara Swisher, revealed (link) that Twitter is working on a new commerce platform that will enable users to buy and sell via tweets.
It looks like Twitter will use the Sponsored Tweet model and insert commerce ads into your twitter stream. The user can click on the link and will be taken to a special Twitter page showing the standard commerce information (pictures, description and the ability to buy the item. The current information shows Fancy.com as the backend.
Twitter has refused to comment on this story but the word on the street is that Twitter is attempting to find solid, highly desirable partners for a possible launch.
I found it interesting that these sample screenshots show Bell as the wireless provider. Not sure if thats a clue to a Canadian test launch or just a coincidence.