I was reading a post yesterday that showed several social media sites without compliant code. It’s been thought that Google will penalize for poor site structure and non-compliant markup and CSS. But do they? It’s tough to say… but I did a bit of research and found that it may not make much difference to have compliant code…

Youtube:
Markup: Failed validation, 72 Errors
CSS: Sorry! We found the following errors (51)

Additional to code errors, YouTube hasn’t implemented a 301 redirect… Do they need to?

Here’s some more interested data…

Tags: w3c, markup, validation, youtube, 301 redirect