Using Xpath to extract useful information from web pages

I've messed with TreeBuilder before but it looks like I should give this XPath business a look the next time I need to parse some HTML.

I was a bit confused when I hit the "quote-likes" section until I realized it was an aside however. A different colored box might be good for those.

"I find html is often located on web servers..."

Comedy gold, f00li5h.