My experience with MS Connect has always left me exasperated.

The only time I have successfully submitted a bug was in relation to API's associated with IE8. A link to a page demonstrating the problem was posted to the MSDN IE Blog, and a 'thank-you' response was received from one of the MSFT senior managers.

I know the IE Blogs are littered with vitriolic comments, but it does appear that they do get monitored for what MSFT may call 'useful feedback'.