>> The SMS is disabled on that version as I have no intention of subsidising peoples' group-messages
If you are interested in advancing that project, you may want to consider sending the SMS messages via email, which would be free. Each user would need to define their gateway when they set up their account. Many carriers have SMS gateways, and an easy way to translate a phone number into an email address that delivers by SMS.
Oh that is very cool. I would definitely invest the time if I was still interested in the project but I have finally found something I want to focus all my attention on. Thanks!
If you are interested in advancing that project, you may want to consider sending the SMS messages via email, which would be free. Each user would need to define their gateway when they set up their account. Many carriers have SMS gateways, and an easy way to translate a phone number into an email address that delivers by SMS.
See: http://en.wikipedia.org/wiki/List_of_SMS_gateways