A company's effectiveness on Facebook can be hampered if the account isn't set up properly.
Facebook's terms of service:
"Profiles represent individuals and must be held under an individual name, while Pages allow an organization, business, celebrity, or band to maintain a professional presence on Facebook."
Pages Offer Analytics and Like Widgets
Two really crucial advantages of administering a Page are user analytics and easily-embeddable Like buttons and widgets.
In Facebook Insights, you can view all kinds of useful data about user activity on your page, including how many likes and comments you received each day and much more.
This data can be really useful for understanding the characteristics of your customer base, and knowing which wall posts get the best reaction. This data is not available to individual profiles.
Another thing profiles don't offer is the means to embed a Like button and other Open Graph plugins into your own site. This is a major setback for businesses hoping to grow their audience on Facebook.
Pages Can Have Unlimited Fans.
On Facebook, individual profiles are limited to 5,000 friends, whereas Pages can have unlimited fans (or likes). Once your profile friend list reaches 5,000, Facebook will encourage you to set up a Page, but doesn't offer a tool to convert your profile to a Page.