Google lets you quantify the searches made by the general public. The general public will I presume start searching google for more in depth articles when they become aware of a distortion within the financial markets.

Housing and sub-prime were the primary trend in google searches, which has now been surplanted by oil. The following chart displays the graphic. Quite how one might capitalise on this type of information is a point for conjecture…bottom of the housing, top in oil, or simply interesting but irrelevant?