First, thanks to Warren. He scooped Panbo! I felt that this is so important an advence in communication, that it needed to be pulled out of the "SPOT" umbrella, since DeLorme seems to be going off on their own (I would not be surprised if SPOT is not far behind (or ahead as you look at it).
In the past two way satellite texting has been expensive for the message units, and for the equiptment. This allows a communicator by DeLorme (InReach) to work with the PN60 Delorme GPS or an Android phone (i phone not yet supported due to programing difficulty with the app). There is bluetooth communication from either the PN 60 or an Android phone and the InReach. The InReach as a stand alone is a GPS tracking device, as well as a communicator with 3 outgoing messages, and capable of receiving an incoming message. When paired with the PN60 or Android phone, you can have texting up to 160 characters, and you can build the contact list on the fly--instead of having to have pre-arranged contact lists.
I see this as competition which is a real plus between SPOT and DeLorme.
The Iridium satellite system has a better track record (Delorme) than the Globalstar ( SPOT). Coverage is somewhat limited in both to the major land masses and population areas (High Lattitudes, S. Pacific, part of S. Atlantic and Indian Oceans are left out of both)
The costs for texting are not published--but the hardware is relitatively inexpensive, as is the basic service plan (tracking and communication with a rescue center).
It is worth reading the blog, and comments on other forums. Apparently this should be out in late 2011. Probably be a good Christmas present for the Boat. But there are a lot of questions to be answered. (Costs, who staffs the emergency centers, interference issues etc)