But I want to really point out - I am NOT saying this module for dolphin is doing any of these possibilities to cover the sms cost!
Just guessing they are also using clickatell, based on what I found online - a lot seem to base on that API.
- Rather the opposite, my impression of the module makers site is good.
http://eyeway.gr Lots of usefull info, tips and even some cool free stuff (facebook template, hehe nice!).

But I do get curious and suspicious at the same time,
since there is see more no mention of how the actual cost of sending sms is being covered.
Cause free as in free beer is just not an option!
Hopefully they can elaborate on this when asked.
Could be they earn only on the module, and possibly the provider shows ads to cover their sms (surely cheaper sms for provider).

Does anyone have this module on their site? I'd love to try it. (might find one among happy customers)
If it works well when I sign up my mom, I'll go back and recommend it. :)

- I know of one company that offers free sms in my country (suggested them one of their current providers),
and they state "you will not receive any commercials from us on sms or email" - But the receivers do... and no mention of it ;)