As the web advances, and standards rise, many old browsers are becoming outdated. That said, many of these are still being used, most frequently Internet Explorer 7. When it was released, IE7 was top of the line...but that was long ago. Now it has become nothing more than a hurdle for web developers; the cause of needless work. Now, one company has had enough.
Australian retailer Kogan has imposed a tax on IE7 users who make purchases on their site. A popup warning is given to users, who are told that an additional 6.8% will be charged because of the outdated browser. Kogan says they were sick of wasting time fixing their new site for IE7, hence the tax to deter users from visiting the site with the browser.
See below a shot of the popup warning on the site:

What do you think? Is this idea good for lowering the use of these outdated browsers? Or is this method harsh, and will it scare potential customers away?