1. An online legal research system for researching expert witnesses, the system comprising: one or more databases containing expert witness data, including area of expertise information; a server operatively coupled to the one or more databases and configured to provide one or more client access devices a graphical user interface, the graphical user interface including: hierarchical means for receiving a query regarding an area of expertise; means for listing two or more experts found in the one or more databases in response to the received query; means for selecting two or more of the listed expert witnesses; and means, responsive to the selection of the two or more listed experts, for automatically retrieving from the one or more databases, tabulating, and displaying side-by-side data regarding the cumulative litigation history of the two or more selected experts.