There are a LOT of blogs out there that use Sitemeter for traffic analytics (including Phoenix Real Estate Guy).
Sometime this evening, something went wonky at Sitemeter, and any blog using it could not be viewed in at least Internet Explorer 7, some are saying also in IE6 and maybe IE5.5.
The problem does not affect those using Firefox (huh. Maybe yet another reason to use Firefox).
(Your tracking code is most likely in your footer.php file or a sidebar file.)
I’ve always liked Sitemeter, been using it for almost 3 years. I suspect someone there is scrambling like mad right now.
There’s a flurry of activity on Twitter about this, and most tech blogs are beginning to mention it as well.
UPDATE: Sitemeter reports the problem has been resolved.