Linux and the ham radio "Internet"

Digital mesh networking is one of the fastest growing modes in amateur radio.  With the recent capability of moving wireless access points into the uncrowded adjacent ham radio bands, the ability to create a linked ham "Internet" has become feasible.  The network is growing by leaps and bounds, and can provide services such as text messaging, webcams, video chat email, and VOIP (both dial-up and chat channels).  All of these services can run on Linux computers.