11. A system for identifying trends in phrases of content based on user interaction with the content, the system comprising: a server receiving identification of a plurality of clicks of encoded uniform resource locator (URL) links, each of the encoded URL links encoded by the server of the linking system and linked to a URL corresponding to a destination server, the server comprising a hardware processor; a content extractor, executing on the processor the server, identifying, for each of the plurality of clicks, in content identified from decoding the encoded URL links, a plurality of phrases that correspond to a predetermined set of keywords; and a trending engine, executing on the processor of the server, determining a velocity of clicks on content corresponding to each phrase of the plurality of phrases and identifying a trend in one or more phrases of the plurality of phrases based on the velocity of clicks.
11. A system for identifying trends in phrases of content based on user interaction with the content, the system comprising: a server receiving identification of a plurality of clicks of encoded uniform resource locator (URL) links, each of the encoded URL links encoded by the server of the linking system and linked to a URL corresponding to a destination server, the server comprising a hardware processor; a content extractor, executing on the processor the server, identifying, for each of the plurality of clicks, in content identified from decoding the encoded URL links, a plurality of phrases that correspond to a predetermined set of keywords; and a trending engine, executing on the processor of the server, determining a velocity of clicks on content corresponding to each phrase of the plurality of phrases and identifying a trend in one or more phrases of the plurality of phrases based on the velocity of clicks. 16. The system of claim 11 , wherein the trending engine determines the velocity based on a number of clicks via one or more encoded URL links of the encoded URL links within a predetermined time period on content corresponding to a phrase.