Front Running

Front Running is when an individual registers domains within minutes or hours after someone else has conducted a domain name search on a registrar’s site, performed a WHOIS query or typed a domain in the browser to see if there is an active Web site. Front Runners may get access to these searches through Internet Service Providers, Spyware, or registries. Front Running allows these individuals to attempt to make money from the domain through pay-per-click ads or by re-selling the domain in the aftermarket at a marked up price.
(Network Solutions)