OK, heres a weird thing. I tested this website, i sent a test text to myself, (i have Rogers in canada) and it got a text saying i am not subscribed to email to text messages, someone wants to send me one, do i want to subscribe. Okay i take it that worked.
Second, i sent a text to my roommate, and he has Bell in Canada, and he never got any of my texts.
So i think that it might have something to do with what carrier you have (?)
Thats at least what i think, i do know that some carriers have text sites like this specific for that company (I know Bell Canada has one on the Bell.ca site)
I still want to understand this a bit more, because it would kick ass if i could receive a text on my cell phone when i am at school or home and respond on my Touch (i have to pay to send texts cause i'm on a cheap student plan 🙂)