A domain where the name itself has little value to the owner. Throwaway domains are typically used to experiment with. It’s common among search engine spammers to register throwaway domains to experiment with things like cloaking. Unethical SEO providers sometimes use throwaway domains to build link popularity to a client’s site. This can backfire though as search engines are continually finding better ways to combat spam. It’s worth noting that Google specifically warns against the use of throwaway domains. See their information for webmasters for details.