1. A method for prompting expertise in a collaboration environment, comprising: entering a name of at least one recipient for a message for a collaboration environment in a graphical user interface; obtaining expertise information for each of the at least recipient based on a context of the message; drafting the message; highlighting at least one word of the message that is associated with the obtained expertise information in the graphical user interface; in response to a user hovering over the highlighted at least one word, simultaneously displaying: a name of at least one recipient that corresponds to the highlighted at least one word, said highlighted at least one word being associated with the obtained expertise information; and a source of the obtained expertise information, said highlighted at least one word being associated with the obtained expertise information, wherein the source is at least one member selected from a group consisting of a company's internal computer system, a social networking site, government records, manual tagging by a user, or collaborative tagging.