11. A system comprising: a candidate term module, executing on a computing device, configured to obtain a corpus of candidate terms from a received seed term, each candidate term in the corpus comprising the seed term; a network traffic module, executing on the computing device, configured to obtain network traffic information comprising a count of the events that occur respectively for each candidate term in the corpus of candidate terms; and a domain name set module, executing on the computing device, configured to, for each of the corpus of candidate terms whose respective traffic information satisfies a condition, identify a set of domain names associated with the respective candidate term, determine whether an actively hosted web page resolves to each of the set of domain names, wherein the set of domain names is owned by an owner of the seed term; notify an owner of the seed term to serve content on a site associated with a particular one of the set of domain names if the particular domain name does not resolve to an actively hosted web page and adjust the set of domain names associated with the respective candidate term based on an attempt to recover a domain name in a previously compiled set of domain names.
11. A system comprising: a candidate term module, executing on a computing device, configured to obtain a corpus of candidate terms from a received seed term, each candidate term in the corpus comprising the seed term; a network traffic module, executing on the computing device, configured to obtain network traffic information comprising a count of the events that occur respectively for each candidate term in the corpus of candidate terms; and a domain name set module, executing on the computing device, configured to, for each of the corpus of candidate terms whose respective traffic information satisfies a condition, identify a set of domain names associated with the respective candidate term, determine whether an actively hosted web page resolves to each of the set of domain names, wherein the set of domain names is owned by an owner of the seed term; notify an owner of the seed term to serve content on a site associated with a particular one of the set of domain names if the particular domain name does not resolve to an actively hosted web page and adjust the set of domain names associated with the respective candidate term based on an attempt to recover a domain name in a previously compiled set of domain names. 13. The domain name set generation system of claim 11 , wherein the domain name set module is further configured to determine whether each domain name in the set is registered.