As always, it depends on your audience. If 1% of your users have IE, then it may well be too much work to support it - although 8/9 are a massive improvement on

As always, it depends on your audience. If 1% of your users have IE, then it may well be too much work to support it - although 8/9 are a massive improvement on 6/7. On the other hand, if you're in my position and run a site where 100% of the users have IE installed in a corporate environment (i.e. often an old version), support is never 'too much work'.