UK Reg, a domain registrar in the United Kingdom is using text written in one of Google's patent applications to help sell 10 year domain name registrations!
I was quite surprised to see a marketing technique used to sell a search engine marketing benefit.
Here's a screenshot from the site below:
Clicking on the "Google patent application" link produces a pop-up which quotes the following sentence from the patent application Google made, with a link to the application in full:
"Certain signals may be used to distinguish between illegitimate and legitimate domains. For example, domains can be renewed up to a period of 10 years. Valuable (legitimate) domains are often paid for several years in advance, while doorway (illegitimate) domains rarely are used for more than a year. Therefore, the date when a domain expires in the future can be used as a factor in predicting the legitimacy of a domain and, thus, the documents associated therewith."