My browser is not supported (I'm using IE9). I dont like the statement, that IE is crap. Sure it was. But that was 3 versions in the past. IE9 and IE10 is much secure than the old versions and it is compliant to industry standards.
The course has an entire module dedicated to make things work in IE: http://html5.instructormatters.com/0.3/browsers-and-seo.html...
You are right that IE10 is a standards-compliant, really good browser (not so much IE9). We were rushing to get the contents out and probably should re-check our browser assumptions.
Thanks for the heads-up.