Facebook's chief executive Mark Zuckerberg has unveiled the social networking site's new "Graph Search" in California.
He said: "This is one of the coolest things we have done in a while".
"Graph Search is the kind of product that we love to build at Facebook - it's a big technology problem and it's also a big social problem".
He went on: "We're not indexing the web. We're indexing our map of the graph - the graph is really big and its constantly changing."
More top news
Astronaut who became an internet sensation after posting a video of himself performing a David Bowie classic in space releases album.
Ancient African DNA sequenced for the first time has revealed a huge wave of migration from Eurasia 3,000 years ago.
Pauline Cafferkey, who contracted Ebola whilst working in West Africa last year, has been flown to the Royal Free Hospital in London.