11. A method comprising: determining at least one spammer targeted keyword relating to a common keyword used in commerce search queries, the determining being based in part on a popularity of the at least one spammer targeted keyword amongst advertisers, wherein the popularity of the at least one spammer targeted keyword amongst the advertisers is based in part on a number of bids provided by the advertisers, and wherein the at least one spammer targeted keyword is associated with a syndication business, the syndication business including at least a publisher, an advertiser, and a syndicator; inputting the at least one spammer targeted keyword to a search engine to generate search results including a plurality of uniform resource locators (URLs); accessing, by one or more processors, one or more URLs of the plurality of URLs; recording the one or more URLs, wherein the recording comprises redirection tracking that intercepts redirection traffic; grouping the one or more recorded URLs using similarity-based grouping; verifying that at least one of the one or more URLs comprises a spam URL; and determining that the spam URL is associated with a spam syndication program, the spam syndication program including at least a spam publisher associated with a doorway page for redirecting a browser to a redirection domain associated with the spam publisher.
11. A method comprising: determining at least one spammer targeted keyword relating to a common keyword used in commerce search queries, the determining being based in part on a popularity of the at least one spammer targeted keyword amongst advertisers, wherein the popularity of the at least one spammer targeted keyword amongst the advertisers is based in part on a number of bids provided by the advertisers, and wherein the at least one spammer targeted keyword is associated with a syndication business, the syndication business including at least a publisher, an advertiser, and a syndicator; inputting the at least one spammer targeted keyword to a search engine to generate search results including a plurality of uniform resource locators (URLs); accessing, by one or more processors, one or more URLs of the plurality of URLs; recording the one or more URLs, wherein the recording comprises redirection tracking that intercepts redirection traffic; grouping the one or more recorded URLs using similarity-based grouping; verifying that at least one of the one or more URLs comprises a spam URL; and determining that the spam URL is associated with a spam syndication program, the spam syndication program including at least a spam publisher associated with a doorway page for redirecting a browser to a redirection domain associated with the spam publisher. 20. The method of claim 11 , wherein the accessing the one or more URLs comprises: accessing the one or more URLs without running one or more scripts associated with a website located at the one or more URLs, the accessing to receive a first webpage; accessing the one or more URLs including running the one or more scripts associated with the web site, the accessing to receive a second webpage; determining a difference between the first webpage and the second webpage; and determining that the one or more URLs includes a click-through spammer URL.