How Does Your Blog Rank?

Being new to this blogging thing, I'm still getting the hang of how it works. I Stumbled across this automated website rater-thing. XinuReturns takes your site URL, then serves up a page of statistics. It takes a screenshot of your site, and tells you things like your Google PageRank and whether you're XHTML and CSS compliant. Also gives a diagnosis of how well your site is SEO'd (for instance, tells you if there's room for more metadata keywords). Pretty interesting stuff, actually. Being the programmer nerd that I am, the XHTML/CSS validator is my favorite part, especially since it actually links you to the page that lists the errors you have. Apparently, this blog has 156 XHTML errors... I'll have to go work on that.