1. A computer-implemented method of managing market information across a network of data providers, comprising the steps of: (a) electronically receiving first data including confidential information regarding market participants in a first system that protects said first data behind a firewall; (b) electronically receiving second data including confidential information regarding market participants in a second system that protects said-second data behind a firewall; (c) electronically receiving an order and targeting parameters from a first market participant; (d) electronically issuing an advertisement request message to said first system and said second system, said advertisement message comprising display attributes of said order and comprising said targeting parameters; (e) electronically prompting said first system and said second system via the advertisement request message to each send a coordination request message to a Coordination Hub, said coordination request message comprising information deduced from said confidential information regarding market participants in said first and second systems, wherein the selection of the information that is sent to the Coordination Hub is based at least in part on said first market participant's targeting parameters; (f) electronically prompting based on the coordination request message said Coordination Hub to issue permissions to advertise the order to selected market participants, wherein market participants are selected based, at least in part, on said received information regarding market participants; and (g) electronically prompting based on the permissions to advertise the order said first system and said second system to route information about said order from first participant to said selected market participants.