“A technology that combines feeds from satellites and telescopes all over the world and the heavens, and weaves them together holistically to build a comprehensive view of our universe” – Google Maps for the universe.

FOAF defines a dictionary of terms for making claims. RDF/XML, Microformats, RDFa define textual notations for publishing documents that encode claims, and SPARQL gives us a way of asking questions about the claims made in different documents.

Share your location with sites and services. Very cool, nicely implemented. I can’t wait to see how others use this service.

The API allows client applications to view and update contacts content. Client application can request a list of a user’s contacts, edit or delete content in an existing contact, and query the content in an existing contact. Yay!