If it's something like BrowserStack then it's great that you're going to provide a similar service. There aren't many remote device labs out there (yet).
The thing that doesn't work for me is that I need to submit my url via Twitter. I wouldn't want to openly flood my Twitter feed with my website tests and have everyone witness my daily testing routines. So that would be a deal-breaker for me, though a project like this (minus the way a site can be submitted) would be an absolute asset.