Systems and methods to authenticate and process requests received via social networking websites. In one aspect, a system includes a data storage facility to store data associating a first phone number of a user with an identification of the user in a social networking website; and an interchange coupled with the data storage facility. The interchange includes a common format processor and a plurality of converters to interface with a plurality of controllers of mobile communications. The converters communicate with the controllers in different formats and with the common format processor in a common format. The common format processor receives a request including the identification of the user, identifies the first phone number of the user based on the data stored on the data storage facility, and uses the converters to communicate with a mobile phone at the first phone number to confirm the request.