Chamea is the first social-network for classified ads where one can buy, sell or exchange goods with confidence. This platform aims to encourage people to trade by giving them the information required to perform a safe transaction. To post in Chamea, users must register using their Facebook account. This is one of the main levers, as users will see their mutual friends and thus feel confident enough to perform any transaction. In addition, users will only be encountered with real profiles, which enable transparency and promote trust.Chamea is free for individuals; however, companies can also create their own accounts and publish marketing campaigns through efficient ads, which are directed to their target market, and these will incur a cost per mille.We believe Chamea will grow rapidly because its design and technology makes life easier for users, but mainly because it satisfies a latent need constantly manifested on social networks: a need to transact with confidence.