Expired Domain Names

 Domain names expire every day without their owners bothering to re-register them. Expired domains may have hosted websites, portals, blogs, or businesses beforehand, and as a result they may have incoming links from other sites and they may come up in the search engines. This means that they are likely to get some traffic, which you can monetize through Sedo or other means. Since this is a such a profitable strategy, you most likely will have to go through a drop-catcher such as Pool, SnapNames, or NameWinner and pay a premium for the expired domain at an auction. Also, keep in mind that the traffic numbers at these sites are likely to drop over time as they fall in the search engine results and users realize the old page is no longer there.