18 Aug 2016
T.I.L. that just because your website looks right in your browser does not mean you write semantic HTML. Check it out using the W3C validator. This site (at the time of writing) had a mere 44 warnings and errors. Time to get that fixed up.
Yes - it goes down a little bit further than that.
Edit: Down to 2! Most warnings caused by current menu item highlighting using a liquid hack resulting in multiple empty id tags. Now fixed using a simple JQuery trick. I wrote about it here.