1. A method for social collaborative prioritization of messages in a messaging system, the method comprising: receiving a message from a single sender as directed to a single recipient; computing a number of messaging applications used by the single sender in an attempt to transmit past messages to the single recipient within a threshold period; determining a value for a social collaborative criterion based upon an application interaction relationship between the sender and the recipient comprising the computed number; transforming the value into a priority for the message; and associating the priority with the message in the messaging system.
9. The method of claim 1 , wherein the message selected from a group consisting of an e-mail, an instant message, a discussion forum posting and a wild posting.