International – Stamped, a new social recommendations app, enables people to share recommendations – of restaurants, books, films and places – with friends.

The app is based on the idea that different people like different things, which often means that anonymous reviews from strangers are less valuable than the opinions of people you know and share interests with.

The app enables people either to give places and things their stamp of approval, or to ignore them. Users are given 100 stamps at first, then, depending on how useful their stamps are to others, they are awarded more.

As Facebook ‘likes’ become less meaningful and more akin to granting brands access to personal information, consumers are searching for more valuable ways of endorsing what they like on social media. For more on the Personal Information Economy, read our macrotrend report.