http://billstarnaud.blogspot.com/2010/09/new-business-and-research-opportuni... Hi Sepp, could you look into 2 important issues discussed here, i.e. 1) opening up sim cards and 2) 5G networks, i.e. 4G plus green ? see: 'Rudolf van der Berg has written a great report for the Dutch Ministry of Economic Affairs on how we can make SIM cards open and accessible to everyone which enable a whole new generation of wireless networks and applications. Freeing the SIM cards will allow users, R&E networks, community networks to deploy their own Internet wireless infrastructure that integrates Wifi, Whitespace, FTTH, mesh networks and traditional 3G/4G networks. This will also allow them to extend the 5G network with solar or wind powered WiFi or GSM nodes in specific areas – especially where there is no business case for the network operator e.g. environmental networks." -- P2P Foundation: http://p2pfoundation.net - http://blog.p2pfoundation.net Connect: http://p2pfoundation.ning.com; Discuss: http://lists.ourproject.org/cgi-bin/mailman/listinfo/p2p-foundation Updates: http://del.icio.us/mbauwens; http://friendfeed.com/mbauwens; http://twitter.com/mbauwens; http://www.facebook.com/mbauwens