[RandallBrown]

The web is a platform like any other. Supporting IE takes testing and development time and more importantly SUPPORT time.

So why block IE users and not just let them fend for themselves since you don't "support" it? Because you're still going to get people trying to use your site in IE. They're going to send you support emails and they're going to complain to people about your shitty app not working. That costs time, money, and reputation.