1. A method of linking topics in a publish/subscribe messaging environment, comprising: linking, using a computer processor, a first topic stream of a first root topic to at least a second topic stream of at least a second root topic, wherein there is no commonality between said first topic stream of said first root topic and said at least a second topic stream of said at least a second root topic, and wherein a cyclic check includes loop detection when linking said first root topic to said at least a second root topic; at least a first subscriber registering to said first topic stream; at least a second subscriber registering to said at least a second topic stream; storing, in a node of said first topic stream, a list of said linked at least a second topic stream, wherein said list can be updated at runtime by an administrator to add or remove links; publishing, using said computer processor, at least a first message on said first topic stream to said at least a first subscriber of said first topic stream; referencing said list of said linked at least a second topic stream in a same transaction as publishing said at least a first message on said first topic stream; and publishing said at least a first message to said at least a second subscriber of said linked at least a second topic stream.