XSLT and RSS feeds.

XSLT is XSL Transformations, and XSL is Xtensible Stylesheet Language. (So says w3schools) XSLT is pretty impressive. With a single stylesheet you can completely reformat XML »

Obscure Markup

This is probably the least tipworthy tip i can find, but here's some of the weirdest, most unusual tags and functions you can use in your »