A recent survey suggests that many websites won’t work well with IE7. Normally, it wouldn’t matter much if sites don’t work with a new browser, as take-up is typically pretty slow. However, many people will be upgraded to IE7 automatically.
I have to admit that I haven’t tested my site with IE7. I’m hoping that it will be OK, though, because I know it works with most other browsers. There are a number of sites out there that really only work with IE6, as they take advantage of its non-standard features. They are the ones that are likely not to work with IE7, which apparently has a different rendering engine.
In this case, it’s definitely a case of “do as I say, not as I do”: don’t skimp on the testing.