Know when to post on other walls. Posting information on other people's Facebook pages can get you a lot of attention. Make sure it's the right kind of attention. Post on other Facebook pages when you have something worthwhile to say. Do not ever do spam other pages.
Don't continually send daily sales messages asking for your fans to make purchases. While you may think that it's something that can make you some money, people don't like to be pressured into making purchases. If they think you are begging for sales, they may feel like the quality of your products isn't that high.
There are plenty of each out there. People usually are on the lookout for good practices, but they rarely look into the worst ones.You also need to learn what you should not be doing in order to avoid it.
You should focus on facebook that are interested in what you have to say. Facebook. Look at your conversion rate if you want to see how well your marketing campaign is doing.
Always establish a clear purpose for your Facebook page is for. Don't create a Facebook page just for the hip thing to do. Do you want to tell your customers? Or do you have it so that your customers get in touch with you?
Don't send messages to the audience base daily sales messages to your fans. While you certainly have a goal of increasing profits, people don't want you to beg them to buy something from you. If they think you are too pushy, people might think your product lacks the quality to sell itself.