Just wanted to highlight that we have launched an Ecommerce application on facebook, and we believe in growing this into a serious utility app.

Do have a look at the application in your spare time, and any suggestions/reviews / improvement hightlights are welcome.
http://apps.facebook.com/simpleicom

We are readying our application for an integration with Bebo, currently.

Just to give an overview, we have introduced some new concepts wherein users can post to select groups / networks only. Features are also provided for bargaining between 2 friends, apart from the usual auction type sales. There is a main Global Market through which posts can reach out to users in other Social Networks.

Thanks,
Santosh