ReadWriteWeb

It was just a couple of weeks ago that Yahoo! announced that it would begin indexing semantic markup language such as microformats in its search engine. That's a huge win for the bottom-up approach to building the Semantic Web, and provides an incentive for publishers to start adopting semantic markup like RDF and microformats. As a publisher, Yahoo! is also eating its own dogfood, so to speak, and putting microformats to use on its own sites.

Today Marshall Kirkpatrick interviewed Facebook CEO Mark Zuckerberg at SXSW, with the main topic of discussion being Data Portability. Later in the day at the festival, a star studded panel discussed building portable social networks. The panel highlighted four technologies that help make identity and data more portable across social networks: hCard; XFN and FOAF; OpenID; OAuth.