Here is another statistics link [www.onestat.com] The numbers are coming from "more than 75,000 websites in 100 countries".

As quote from the site:

"Methodology: A global usage share of xx percent for browser Y means that xx percent of the visitors of Internet users arrived at sites that are using one of OneStat.com's services by using browser Y. All numbers mentioned in the research are averages of last week and all measurements are normalised to the GMT timezone. Research is based on a sample of 2 million visitors divided into 20,000 visitors of 100 countries each day."

I don't want to spam these comments will several links of browser statistics, nor do I want to come off to people as some sort of Browser Statistic expert. I am simply trying to show how many visitors that [jacklewis.net] and other sites that block Firefox, will lose. Although I'm sure because of this "stunt" [jacklewis.net] has gotten a crapload of visitors in the past couple days.

I personally think it is hard-headed to block Firefox users as a whole and to think that only Fx (btw, I personally had no idea that Fx was the proper short form for Firefox, I always used FF) users use Ad-blocking software/extensions/etc is plain dumb. As some people have already mentioned there is an ad-blocking extension for IE called IE7Pro. The first thing I did after I installed it was go to [jacklewis.net] and block the ads. Now, that may be childish... but who cares.