One of the most valuable tools for communicating with your customers and prospects is your Facebook Business page wall.
Facebook business pages give you a chance to promote your business, but shameless self promotion is still a no-no for effective social media. You have to make visiting your page worth it to your fans. Post relevant content from related sites to increase your page’s value (increased to 5000 characters in 2011, don’t be afraid to use them all).
Make sure you’re getting in the “mud” with your audience by participating in the ongoing discussions. Look for opportunities to comment on other people’s status updates and start conversations on your own pages in which others can participate.