1. A machine-implemented method for encouraging an economic-opportunity seeker to revisit a queriable database node, the method comprising: (a) automatically submitting the seeker's search query to an economically-directed history database for thereby selectively retrieving economically-directed historic information corresponding to the seeker's search query; (b) automatically forwarding the selectively retrieved historic information to a futures predicting engine which generates predictions of future economic behaviors based on automatically obtained, current economic predictor factors and the selectively retrieved historic information; and (c) automatically generating from the predictions of future economic behaviors query results which indicate future time points at which more and/or better search results are expected to be available in response to the economically-directed search query.