Not exactly a secret, but Nokia's Remote Device Access (RDA) is insanely great. As far as I know, it's unique in the industry. It lets me test UIs on every single iteration of every target phone quickly and simply, and it means I can keep my own device library reasonably compact. I tend to take a week over the UI QA process, booking time on every device and going through the checklist for each. It works very, very well for me at least.
As to your own site, sorry to say this but I couldn't finish watching the video. I found it pretty tedious, and I couldn't really figure out what it is your software does and why I'd need it. As near as I can figure it's a way to bundle scripts in to SMS, and then the phone executes them. That just screams "security nightmare, don't touch with lead lined gloves" to me. Couldn't you add some text saying what it is, so I don't have to sit through an extremely amateur 15 minute video and still learn less than a paragraph of text would tell me?