5. The method of claim 1 , wherein the plurality of distributed electronic devices comprises a plurality of mobile electronic devices configured to sense the implicit demographic data.
5. The method of claim 1 , wherein the plurality of distributed electronic devices comprises a plurality of mobile electronic devices configured to sense the implicit demographic data. 6. The method of claim 5 , further comprising: generating, by the computer system, a plurality of recommendations based on the first demographic profile for the first context, and sending, by the computer system, the plurality of recommendations to a portion of the plurality of mobile electronic devices, wherein the plurality of recommendations are based on the demographic profile for the first context.