Is this a good thing?
I expect it is, I'm using Firebug myself, an excellent tool. I will give this dynaTrace software a go. To be honest I never heard of it, thanks for bringing this to my attention.
"Andreas Grabner said that most IE sites are suffering in terms of development and functionality because devs have switched to Firefox or are going to Google's Chrome."
That's understandable, it is easier to write standards compliant code and then bend the code to work in IE rather than coding to IE standards and then having to bend to code to suit more standards compliant browsers. However, is there such a thing as an IE site? And if there is, should there be? I always thought a website was standards compliant or not.