xfolk - Microformats

I was looking for a bookmark sharing standard. Sure enough there is a microformat xFolk proposed.

xFolk is a simple and open format for publishing collections of bookmarks. It better enables services for improving user experience and sharing data in web-based bookmarking software. xFolk may be embedded in (X)HTML, Atom, RSS, and arbitrary XML. It is one of several open microformat standards.

Microformat is simple conventions for embedding semantics in HTML to enable decentralized development. It remixing of websites possible, as shown in the wonderful Live clipboard demo.