I think Microsoft has something to worry about. Firefox usage is on the rise.
I just checked my statistics, and 64% of visitors to my site use Firefox. Of course, that includes my own visits: checking my entries for errors, accessing my blogroll. IE users have dropped to 31%, with Mozilla and Netscape at 3% and 2% respectively. A few months ago when I first downloaded Firefox, I noticed only a few visitors to my site used it — in fact, the Firefox users were basically limited to Crankydragon and me. I don’t know what kind of numbers Firefox is looking at in the grand scheme of things, but this article cites a study that found that Firefox gained a 4.6% share in the two months since Version 1.0 was released.
Of course I have gone on at length about my feelings about the browser. If you use it, what do you think? If you haven’t tried it yet, why not?