1. A method for managing distribution of subscription data within a network of publish/subscribe messaging systems, said method comprising the steps of: maintaining, in storage associated with a first messaging system, information representing a taxonomy of subscription topics of the first messaging system; forwarding information representing at least a part of the taxonomy of subscription topics to a connected publish/subscribe messaging system; comparing, using topic name matching, forwarded information with a taxonomy of subscription topics maintained for the connected publish/subscribe messaging system, to identify differences and similarities; and in response to identification of differences between the taxonomies, using the forwarded information to generate a modified taxonomy of subscription topics for the connected publish/subscribe messaging system which increases consistency between the taxonomies.