Using the power of the smartphone, Tillless offers retail intelligence and self-service checkout and payment. Tillless was created with Matthew Sinclair from Geodica. The challenges of retail and payments have put the project on hold (as of June 2015).
There's enough stuff in the world already, why not find a home for your stuff you don't what with Furcle?
Furcle was an experiment in developing a hyper-local marketplace for finding a home for useful secondhand goods. Furcle was offered as a niche, free service during 2011/12 and is now closed.