> you need to develop a special site just for IE.

That statement had a fair amount of merit up through IE7.

I develop web database applications as my primary job - Using IE9 and 10 in standards mode makes them work at least as well as they do in Chrome. Firefox seems to lag farther behind with each release.

We take cross browser compatibility seriously. Our apps run in IE and Chrome seamlessly before they go out for testing. Aside from a few minor CSS differences, we have no issues developing apps that work in both w/o any special handling.