The MVC Social Helper project would enable a developer to easily integrate the AddThis and ShareThis social sharing widget in their MVC 3 projects in the initial release. The AddThis and ShareThis widgets can be easily customized while using the Helper. It is shipped with predefined configurations for both AddThis and ShareThis widgets, however you customize AddThis and ShareThis widget based on different criteria e.g. Which button to include, Button size, Widget style, etc.
