Well it seems that Hotxt are closing the doors on their service as of 30th September.
Seems even with the mighty Doug Richard backing them they couldn't compete with good old fashioned SMS. It may cost more, but it sure as dammit works more reliably and everyone, and that's 2.5 BILLION subscribers, can use it.
The team behind it are not giving up mind you, they're releasing a new service trutap which on casual first inspection seems to be a social networking, blogging, communication type thingy.
Ah the joy of using free services where providers can pull the plug when they feel like doing something else.