1. A method, comprising: detecting a set of one or more indicators of relevance for each of a plurality of matches, wherein each of the plurality of matches exists between a first entity and a different one of a plurality of entities, wherein each set of one or more indicators of relevance includes behavioral indicators that indicate a degree of two-way interest for a corresponding one of the plurality of matches, the degree of two-way interest indicating both a degree of interest of the first entity in the corresponding one of the plurality of entities and a degree of interest of the corresponding one of the plurality of entities in the first entity; determining a probability of relevance of each of the plurality of matches based at least in part upon a corresponding set of one or more indicators of relevance; and ranking the plurality of matches based at least in part on the corresponding probability of relevance.