A method, system, and program product, for determining related search terms for a domain, comprising: receiving a request for related search terms for a domain, obtaining click data on the domain for initial related search terms determined for the domain, obtaining revenue generation data for each of a plurality of the initial related search terms; determining a first set of the initial related search terms with a highest revenue or ad clicks generation; generating a second set of new related search terms, comprising: obtaining keywords that are semantically relevant, obtaining how many advertisements are targeted to the respective keyword, and obtaining for each of multiple of the respective keywords an amount that advertisers have paid over a period of time for use of the respective keyword.