XML

Short for extensible Markup Language, XML promises more efficient and organized delivery of data over the internet. XHTML is the XML version of HTML.

XML Feed

form of paid inclusion where a search engine is "fed" information about pages via XML, rather than gathering that information through crawling actual pages.

XHTML

Extensible HyperText Markup Language is a class of specifications designed to move HTML to conform to XML formatting.

XML Maps

XML maps are specially formatted links to your pages. They will never replace the need for HTML site maps.