I haven't quite grasped the entire concept, but it appears to be a start-up creating "virtual letters" -- but with what appears to be "virtual stamps", some of which are boldly copying old US Stamp issues in their general design:


One would think the USPS would frown on such an arrangement, if for no other reason than mimicking old US stamp designs. What do you think?
http://venturebeat.com/2014/12/09/l...yle-letters/