In my microcosm of viewers (of this blog site) Firefox is rapidly gaining in popularity and accounts for ~24% of the market share. Mozilla & Netscape accounts for merely 6%. Overall they account for 32% of the market share.
IE family accounts for 66% of the market and Opera remains a fringe player with less than 2% of the market share.

Here is a brief rundown of the latest stats (January) from my blog visitors:

Browsers

Browser Percentage
IE 6.0 58
Firefox 23.77
IE 5.x 8.27
Mozilla 5.79
Netscape 2.46
Opera 1.72

Browser Family

Browser Family Percentage
IE 66.26
Mozilla 32.01
Opera 1.72

The people's mandate is clear - Go Firefox!

What does your stats say?