I want to add to what Braiam has said. Stack Exchange has the following badges as reward for sharing a link with your networks: 1. [Announcer][] (Bronze): *Shared a link to a question that was visited by 25 unique IP addresses.* 2. [Booster][] (Silver): *Shared a link to a question that was visited by 300 unique IP addresses.* 3. [Publicist][] (Gold): *Shared a link to a question that was visited by 1000 unique IP addresses.* If you are after more information those badges are specified on the [badges](http://askubuntu.com/help/badges) section. [Announcer]: http://askubuntu.com/help/badges/57/announcer [Booster]: http://askubuntu.com/help/badges/58/booster [Publicist]: http://askubuntu.com/help/badges/59/publicist