Why do people "become a fan" of a brand on fb? What value do people get from publicly declaring they like gatorade? I contrast this with the implicit declaration that occurs when I carry a gatorade bottle around, because in that situation presumably I'm enjoying drinking it.
I cannot see how doing so would benefit a) me or b) my friends who might see that I like gatorade.
It just seems like I'm a) giving fb more information about me and b) inviting gatorade to try and sell me things.
Am I wrong or is becoming a fan of a brand just all bad for the user and all good for fb/the brand?