Applications such as iMessage, KakaoTalk, LINE, Signal, Skype, Snapchat, Threema, Viber, WhatsApp and WeChat have become an increasingly popular means of personal and business interaction. Surprisingly little academic effort has gone into understanding the nature and origin of these...

This keynote presentation from the COST605 WG2 public workshop on "Mobile communications for the poor and needy", Lisbon, November 2008, gives definitions and an overview about how mobile communications and appropriate tariffs can help this disfavoured group. Statistical data are provided mostly...

Some COST 605 Action participating countries have contributed to a survey on the above subject. The focus is on: 1) social parameters , demographics / employment:/income of needy/poor people, and for measured or assumed mobile service usage and spending 2) cases of individual or groups of needy...

Prescott (2004) argues that Europeans work much less than Americans because of higher taxes and that they would gain significantly by charging US taxes and working as much as Americans. I argue that the opposite may be true and that Americans work more than Europeans due to a coordination...