Federated SPARQL queries in your browser

This is cool because it breaks the complex SPARQL query into sub-patterns and it then sends multiple HTTP requests to several web-services, and results are streamed back. Here's an example:

http://bit.ly/cubist-works

Each web-service speaks a protocol (called triple pattern fragments) which is lightweight for servers to run (it's only a match of triples), and therefore has lots of availability - they can serve lots of requests/sec.