Thanks. Point taken. Do you have any specific questions in mind?
What info do you report back? What format is it? Do you handle different types of errors? And if so how do you report them? Do you plan on providing an API for devs to retrieve this info?
That's all I can think of on the spot, I just think you know your product better than anyone else, adn if you were trying to convince yourself to use it, surely the 8 point feature list wouldn't cut it.
To answer your questions right here: The only info reported back is the three parameters from window.onerror (error message, line number, file name), and the page on which the error occurred. It's submitted as a regular form POST. There's no distinction between different types of errors - everything that window.onerror catches is posted. I do have plans for an API (and several other features) in mind - it's still work in progress.
When an error is encountered it makes all the diffence that it was on a machine running ie7 (as an example).