How many of your surfers use IE vs FF?
 

My serverstats says:

IE 73.2%
FF 13.3%

yes, that is about right

IE 59.1%
Mozilla 16.4%
FF 15.1%

Someone else have numbers? :)

In the balpark.

From two of my larger sites:

MSIE 66.99%
Mozilla 26.18%
Netscape 4.18%

1. Internet Explorer 6.x 70.1 %
2. Mozilla Firefox 1.x 21.5 %
3. Internet Explorer 7.x 3.7 %

Also, it's interesting to note that less than 10% of my visitors are still browsing at 800x600.

Yeah, thats why I try to design for 1280x1024. I think that is standard for the most people with money to buy porn :)