1. A method for network resource conservation through device resource sharing, the method, comprising: detecting that multiple devices are attempting to access a same content source over a cellular mobile network through separate, respective polls of the cellular mobile network, wherein the multiple devices are managed by different users and not associated with the same user; detecting that mobile devices meet a criteria; wherein, the attempt to access the same content source is made over the mobile network that includes 3G, 4G or LTE network; wherein, the same content source is polled once in a single poll event by a single one device of the multiple devices; transmitting content received in response to the single poll event of the one same content source to the one device of the multiple devices and a second device of the multiple devices over a wireless network; wherein the transmitting occurs when it is determined that the content received responsive to the single poll event is relevant to the different users who use the one device and the second device; wherein the content received in response to the single poll event is stored in a local cache of the one device to satisfy subsequent requests of the second device or other devices of the multiple devices, wherein the multiple mobile devices are each cellular phones operating over the mobile network, wherein the criteria includes a spacial criterion and a social criterion, and notifying a local proxy on the one device that the content stored in the local cache is no longer valid, wherein the response is removed from the local cache when the response is no longer valid.