Nice name indeed.
The only minor problem is that the concept is a hard one to realise. I used to run a "free" sms site, although technically, it wasnt free, we were footing a 40k bill each month. Then, allow for the cross network charges now levied on sms for global messaging, and the term "free" can never be applied.
If you can sell the service (concept), then $xx-mid $xxx
Good luck.
Matt