Popular messaging apps today are designed so that all your messages and data flow through the provider of the app. The companies that provide these apps are in the perfect position to track everyone's messages and contacts.
Snikket is different. The Snikket network is instead made of lots of smaller independent services that can all communicate with each other. Together they form a large messaging network with nobody in the middle. Every person in the network can choose to use a Snikket service provided by someone they trust - this could be an organisation or simply a technical friend or family member!