Amazon - eigenaar van de nieuwe, bijzonder uitgebreide zoekmachine a9 - vertrouwt erop dat virale marketing ‘haar ding doet’:
?We don?t advertise this additional discount that we give in exchange for using A9.com, so if you want your friends to know about it, please tell them. It is probably the only way they?ll find out. All they have to do is use A9.com as their regular search engine. They should make sure they are signed in to A9.com (it should be recognizing them by name) so that we can be certain they get credit for their visit.?