Been learning more about writing standards compliant code. Read up this morning on XHTML and how it offers some advantages over standard HTML. Basically it's much cleaner, and requires less guesswork on the browser. You can make sure your page output is going to be the same in many browsers.

The W3C has a pretty cool validator utility to check your page for syntax errors, either in HTML 4.01 or in XHTML. I highly recommend reading their docs, it'll make your pages nicer in the long run.