It is a page specially created as an internal communication channel between Facebook users, interested in the same topic, cause, character or company. which makes it different from the profile. Facebook's proposal suggests that it is a better and more efficient way to do business marketing by Facebook.
FANPAGE anglicism coming from FAN, adept, fanatic and PAGE, page, virtual site; virtual page where an idol of music or sport is venerated. Eventually, from an important politician.