10. A computer-implemented method for evaluating the supply of electronic content on an electronic network, the method comprising: receiving search results history for a plurality of queries by users for at least one keyword; determining, with at least one processor, a click results variability for the plurality of queries for the at least one keyword, wherein determining the click results variability includes calculating a number of times each unique result contained in the search results history was clicked on; determining a search results variability of the search results history for the plurality of queries for at the least one keyword, wherein determining the search results variability includes calculating a number of unique results contained in the search results history for the plurality of queries for the at least one keyword; determining, with at least one processor, a supply value indicative of a supply of electronic content on the electronic network relating to the at least one keyword, based on at least one of the determined click results variability or the determined search results variability; and making available, over the electronic network, additional supply of electronic content relating to the at least one keyword, based on the determined supply value.
10. A computer-implemented method for evaluating the supply of electronic content on an electronic network, the method comprising: receiving search results history for a plurality of queries by users for at least one keyword; determining, with at least one processor, a click results variability for the plurality of queries for the at least one keyword, wherein determining the click results variability includes calculating a number of times each unique result contained in the search results history was clicked on; determining a search results variability of the search results history for the plurality of queries for at the least one keyword, wherein determining the search results variability includes calculating a number of unique results contained in the search results history for the plurality of queries for the at least one keyword; determining, with at least one processor, a supply value indicative of a supply of electronic content on the electronic network relating to the at least one keyword, based on at least one of the determined click results variability or the determined search results variability; and making available, over the electronic network, additional supply of electronic content relating to the at least one keyword, based on the determined supply value. 15. The method of claim 10 , wherein making available the additional supply of electronic content includes at least one of: sending, over the electronic network, a communication to a contributor requesting the contributor to create and submit electronic content relating to the at least one keyword; and posting on a website a solicitation to create and submit electronic content relating to the at least one keyword.