Down-voted for suggesting IE support I suppose. The point was that 50% of end-users won't be able to use this site. I'd have said the same if the site didn't work in Firefox.

You do not make a site that doesn't support the dominant browser, especially not if you intend to sell, and double so, if the end-users are consumers and not businesses who might be forced into using a certain browser.

To you people who put your love for an arbitrary piece of software, above your common sense: Get a grip.