Hi all,
I find this an interesting thread. I had a conversation recently with another net-savvy person who said they had switched, and nearly everyone he knew had switched.
This is a big concern for me since I’m told my sites don’t load right on firefox.
as of now, my firefox user traffic is only 1% so I’m not terribly worried, but if it starts getting up around 5% I’ll probably take measures to ensure it loads correctly on both worlds.
However that may prove harder than I thought, so I’m in no hurry to cross an unsteady bridge if I don’t have to 
I suspect of those who do change, it will be the more net-savvy people who will be likely to go with firefox, and the less orientated will be stay msn all the way.
Now ask me that again a year from now and see if I say the same. These things have a way of taking off. And since it has possibilities of being a major pain in my ass, I’d guess it has a good chance of happening.