Facebook Fan Pages, also known as Facebook Public Profiles, are profiles intended as promotional pages. Everything on a Facebook Fan Page is accessible by the public.
If you want to promote something, whether it's a product, group or event, you should create a public profile instead of a personal profile. The two page types are very similar. As personal profiles do, for example, Fan Pages give you the ability to post status updates (great for news feeds). But unlike with friends, you are not limited to the number of fans that you can have and...they are viral !
To take advantage of the viral nature of Fan Pages you need to attract viewers and entice them
into "opting in" to where they will receive a free tip, gift or other valuable offer.
To make it as easy as possible for your fans, you can upload a "script" to step them through the process.
Highlight your offer with colorful graphics and encourage them to "share" and "invite",
and watch your fan base grow into a powerful, targeted marketing "list".