Mmmm, the article says something I've been wondering about for a long time.
With so many sites using Google's Analytics, I'm truly surprised it's taken them this long to actually get into gear over this.
I read somewhere (Wired I think) that some 40% of websites have Analytics' JS installed.
The FireFox one will be as accurate as you can get I reckon. If you can get 1/5 of the market, it's pretty easy to extrapolate the other 4/5... Then again, (and this is a huge generalization) FireFox users tend to be a bit more highbrow & tech savvy than IE users.
What I'd really like to see is some sort of doohickey that checks Alexa, Quantcast, et al, and makes some sort of score based on the aggregated value of those scores.
Surely an averaged score would be as accurate as you can get?
Trigatch: IE isn't on this because Microsoft never EVER innovates.
They wait until something has been popular for years, and then consider it, spend millions on marketing and consultants, say how awesome it'll be, shows it crashing at its premiere press conference, deny there's any problem and release it onto the market with massive flaws that they only do anything about when they get Governments bitching about it.
Also, this should probably be in Industry News, don't you think?