1. A method for capturing and managing knowledge from social networking interactions comprising: presenting a marking element in a social networking interaction, wherein: said marking element is a visual interface element that allows a user to mark a message of the social networking interaction with at least one of a question specifier and an answer specifier; said question specifier indicates that the user found a message to include a question; and said answer specifier indicates that the user found a message to include an answer; creating a knowledge element in response to a user specifying a message of the social networking interaction to be a question and specifying another message of the social networking interaction to be an answer; presenting a knowledge element indicator to accompany a corresponding message in said social networking interaction, which knowledge element indicator indicates whether said corresponding message corresponds to at least one of the group consisting of a question and an answer; and recommending said knowledge element for use in response to a user comprising a message relevant to said knowledge element in said social networking interaction before said user shares said message within said social networking interaction.