standard compliant
The code on this site is fully complaint XHTML and uses fully-compliant CSS, I think. I'm pretty sure I validated everything.
This site also passes Section 508 and W3C WCAG - AAA automated compliance checks—or at least it did before Bobby went offline.
No promises about MediaWiki. The blog runs WordPress 2.3.3, using the Default theme for now. I really, honestly, intend to write my own, totally compliant theme. Someday.
And for the record, if you see "teh" on the site, it's probably not a typo.