What version of Internet Explorer (IE) should my web app support [closed]

Question

Since MS will stop supporting anything before IE 8 soon, I am not sure if I should make my web app compatible with those older browsers. I know there are still people using them but I don't know if there are enough to make it worth while.

Any suggestions as to how to decide what version to support?

Answer 1

None.

Seriously. You should not support any version of IE. It is absolutely horrible.

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Edit: since I originally wrote this answer, Internet Explorer 9 has been released. IE9 offers significant improvements over its predecessors and is a much more worthy competitor in the browser market.

Having said that, it still has a long way to go before I would consider using it over Chrome (my default browser of choice). Since I use Ubuntu, Microsoft would need to release a Linux version of their browser - and because Halley's comet will return long before that happens, I am staying away from IE.

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Further edit: this does not apply to Edge.