Secret London is a Facebook group started by 21-year-old Bristol University graduate, Tiffany Philippou, on 19 January 2010 in response to a Saatchi & Saatchi competition.
[1] The group grew rapidly (180,000 members as of 8 February 2010[2]) and is composed mostly of Londoners who use the site to share suggestions and photos of London.
After the group's early success, the founder announced her intention to launch a website of the same name by crowdsourcing the design and development.
[4][5][6][7] Following the initial success of Secret London, a number of other secret groups were independently started around the world, some of which already have over 100,000 users.
[citation needed] Some commentators have questioned whether it possible to share secrets without compromising them, and whether sharing tips publicly will lead to over-exposure of the businesses who are recommended.