If you are using your Facebook personal profile to promote a business you could risk having your page shut down by Facebook (it's in violation of their rules). But you're also missing out on the tools and capabilities that are only offered to Pages for business. Here are a few:
1. Facebook Insights
Facebook provides a lot of data to help you analyze how well you're reaching your fan base, the best times to post and which content gets the best response, just to name a few things. But Insights are only available for Pages, not Profiles.
If your posts are only reaching a small percentage of your fans, Facebook offers Pages various advertising options. Even with a limited budget you can get greater engagement from your fan base through advertising via Promoted Posts, Marketplace Ads and Sponsored Stories.
3. Facebook Offers
For Pages with over 400 fans, create an offer (a special deal or promotion, for example) that can be redeemed online or in person. Limit the number of offers and set an expiration date. When someone takes advantage of your offer, all of their friends see it creating a viral effect. This is great for both product and service based businesses.
4. Schedule Future PostsDid you know that you can set up content to post at future dates and times with a Facebook Page?While many people use third party tools to do this, you can now schedule future posting from within Facebook.
5. Manage your Page with Admins
Give employees or social media consultants access to help manage your business' Page by making each of them an Admin. With Profiles, you must give out your personal login and password in order to give access to your page.
There are many other benefits of using a Page for business vs. using a personal Profile. Click here for more information on Pages from Facebook. Comment here with your thoughts.