Etwas ziemlich merkwürdiges geistert gerade durch die amerikanischen Medien:
Amazon hat am 15.06.2010 ein Patent erteilt bekommen, für etwas, das eigentlich Facebook beschreibt.
Das Patent beschreibt ein " Social Networking System" und das hört sich im Original dann so an:

A networked computer system provides various services for assisting users in locating, and establishing contact relationships with, other users. For example, in one embodiment, users can identify other users based on their affiliations with particular schools or other organizations. The system also provides a mechanism for a user to selectively establish contact relationships or connections with other users, and to grant permissions for such other users to view personal information of the user. The system may also include features for enabling users to identify contacts of their respective contacts. In addition, the system may automatically notify users of personal information updates made by their respective contacts.

Auf Deutsch: Facebook.

Hier der Link zur Patentschrift: Social networking system by Amazon Technologies, Inc.