good points, i didn't think about that. although yes, in a more webmaster-oriented or tech-oriented environment, you are going to have a lot higher usage of alternate browsers.
however, in general surfer environments, you're going to have primarily IE traffic. the masses are exactly that.
glad you like tbird tho. i'm really digging it, it's bad-ass. i hope it stays around for a while (and knowing mozilla, it should), since i used outlook for like 5 years.
AND ALL HAIL THE PNG! i love that format, it just angrifies me i can't use it. my two really favorite parts are higher quality animations at smaller sizes, and the ALPHA TRANSPARENCIES. you can do some neat stuff with that, but now i'm forced to do any of it completely static, whereas it could be done dynamically with the png