A link to a page that no longer exists: spiders check these types of links and eventually eliminate them from search engine results. Also see Link Rot.
Content websites that serve PPC adverts from the same provider, such as AdWords.
The easy to read name used to identify an IP address of a server that distinguishes it from other systems on the World Wide Web: our domain name is wscubetech.com.
In paid search advertising, this allows keywords used in searches to be inserted automatically into advert copy.
The elements of a URL that are dynamically generated.