What is a brand?

http://www.brickmarketing.com/define-branding.htm
accessed on the 15th November
http://dictionary.reference.com/browse/brand?s=t
accessed on the 15th November

I noticed I had not look into what a brand actually was. "A brand is the idea or image of a specific product or service that consumers connect with, by identifying the name, logo, slogan, or design of the comp any who owns the idea of image." Taken from Brick marketing who is an marketing company in Boston, MA USA. So facebook fan page is the public product or service that the customer identifies as that.