The entire pixinsight.com website should now be fully compatible with IE 9 and IE 10 working with default settings. Please let me know if you still see any pages that don't render webfonts correctly on IE 9/10. You may need to refresh your browser for pages you already visited.
Note that IE 8 is no longer supported. Naturally, the website continues working without problems with standards-compliant browsers such as Firefox, Chrome, Safari, Opera, Webkit-based, etc.
I apologize for the inconvenience.