Member Rara Avis
The stats at Sitemeter include the main site and the visitors there are typically a little more behind the times (I can say that, because I still use Netscape 4.7x for most things). I'm hoping the vast majority of our forum Members use IE 5.5 or better.
And, no, it's not an idle question. I'm designing some new software and can offer some pretty nifty features for those using IE 5.5 or better. But it's only worth designing two versions of the software if most of our Members will benefit.