1. A method for checking documents using colloquialisms, the method comprising: tracking colloquialisms used in messages by users in a social network; identifying relationships between senders and recipients of said messages using said colloquialisms; generating a social graph to depict relations between said users in said social network based on said identified relationships; formulating usage patterns of said colloquialisms among said users of said social graph; generating a rule set based on said social graph and said usage patterns of said colloquialisms among said users of said social graph; and reviewing, by a processor, a document using said generated rule set.