The famous try their hardest to conceal themselves on this site, but the media still manage to find them. They've had gossip from Lily Allen declaring her singledom a few years ago to discovering who else Jennifer Thompson has been hanging around with after the Rooney scandal.
What is it?
Despite predictions that it would lose favour over time, the definitive social networking site Facebook has gone from strength to strength, and in July 2010 it hit the 500 million user mark.
Its success is in part due to the way it has adapted to the needs and demands of its customers, letting them connect with old an school friend, business colleagues, or people in their area. Facebookers can also share videos, web links, photographs or show their allegiance to their favourite celebrities and TV shows.
Now a new dimension has hit the site. 'Questions' brings search to the platform, allowing users to post their queries so Facebook's 500m strong network.
But what are the other websites that captivated our imaginations or are preparing for take-off in the UK market?
Tools designed to ensure computer code in smart cars does not crash has been inspired by hungry penguins.
The rounded sleeping capsules send guests drifting into ocean before arriving on desert island by morning.
Sitting on the saddle activates the part of the brain responsible for learning, a study has claimed.
Scientists are appealing for more people to donate their brains for research after they die.
Life on Earth may have arrived from Mars on an asteroid, scientists have claimed.
Lunar mission scheduled at the end of 2017 could find out if beer can be brewed on the moon.
A bottle used to teach children how far litter can travel ended up on Scottish beach after 8,700-mile journey.
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