By using a collaborative filtering method, we can identify keywords that are closely related to "pay per click search engine". Of all the web sites that target "pay per click search engine", these are the most commonly targeted keywords by this same group of web sites, sorted by the highest number of web site matches.
The root keyword phrase "pay per click search engine" also exists in these keywords. Drill down to see who is targeting long-tail variations off of "pay per click search engine".
The keyword phrase "pay per click search engine" can be broken down into these keyword pieces. Find out who is targeted short-tail variations off of "pay per click search engine".
