Your first instict as a business may be to only allow posts from your business on your wall, to keep it professional. However, your fans (ie customers, supporters, potential customers) may want to publically chime in and let you know that they support you, or have a question that if answered, could apply to other potential customers. In fact, there may be some fans who have written on your Wall right now, but you never noticed!
To check, there is a little link that you very easily could have missed. It's at the top of your page, just below those tabs that say "Wall", "Info", "Photos", and the like. Under that is a text link that is called your business name. Next to it is called "Just Fans". It looks like this:
If you click on "Just Fans," you will see if any of your adoring fans wrote to you in a public way. Now. This public exposure is an incentive for them to write on your wall, which in turn shows up in their News Feeds as an activity that they did, which their friends can see, which then might prompt their friends to come on by and visit your page and see your business. So it may be in your best interest to allow these fan posts to be on the main portion of your Wall. If you did, your main Wall, if you selected that you want fan comments on it, would look like this:
Where you see the little yellow "katie james" squares is my business posting something to my page. Where you see other pictures of people is those people posting things to my page, and everyone else can easily see them. You can see from this picture that some fans of Katie James are asking Facebook questions. This is a great way for me to see them, and answer them back here on the blog.
To enable this to happen, follow these steps:
Click on the "Edit Page" link in the top left of your page, under your logo.
From there, you will use the little picture of the pencil to select which things you want to edit. Click the pencil near "Wall Settings". Click "Edit".
From the pulldown, select this from the setting, where it says "Default View for Wall", click "Posts by Page and Fans".
Now the fans will show up on your main Wall, with the posts from your business. To change this back, just follow these steps, and click "Only Posts by Page". In this case, "Page" means you.