Indeed - I'm surprised not many have responded. I used to always see people complaining about lack of enough 'push' options. I used to use a program just like this one called pusheffect, only I had to pay for it. This does the exact same thing, except much much cheaper
Not to mention the fact that its purpose isn't just for push mail support. It's an SMS trigger service that can execute any command depending on your parameters. Haven't played too much with it, but I plan on getting facebook txts to automatically refresh the wm facebook app.
Anybody think of other stuff to do with it?