Recently, many most liked Facebook pages suffered large drops in numbers. The move follows the social network’s admission that 8.7% of its users are not “real”, many having been set up by spammers who artificially making those pages more popular.

Using Facebook as a media to advertise is free but may not be influential.Some companies just put delicate photos on their Facebook pages and let Facebook users comment on each photo, so that they can get some feedback about their products. However, beautiful graphs and comments are not convincing enough to drive users to buy products.

There is another problem: how can companies let users find their pages? The answer is producing fake “likes”.Facebook will show the latest photos and posts of the pages that users like, so that more information about their products and services can be acquired by users. But sometimes the “like” button is automatically clicked by spammers, which means even if you didn’t click the “like” button, the Facebook system will regard you as a liker of certain pages.

However, if the users themselves are not interested in the page which automatically appears  in their news feed page, those Facebook users will get bored and annoyed gradually, which easily produces negative feelings about the company and their disturbing advertisements.

In this case, the free advertisement in Facebook is not only useless but also harmful to a certain extent.