Just how influential has Facebook become in the world of online advertising? According to a study conducted by Experian Hitwise, each Facebook fan of a product or company translates to 20 website visits. Hitwise tracked people’s online search history to show that after liking a Facebook fan page, many Facebook users continued on to the brand’s website or searched for the brand using a search engine.

But just how valuable are these 20 website visits? E-Marketer found the top reason most become a fan of a brand on Facebook is because the Facebook user is already a customer.

That leaves the burning question: Is Facebook simply another way to connect people who would already visit your site or is it possible to draw in new costumers? Does it matter? Often, keeping a customer is much more profitable than getting a new one.

Just having a fan page does NOT equal successful advertising of your brand, but a Facebook fan page can be useful if you are doing a good job communicating with your customers.

Here are a few tips:  Update your page frequently. It’s also a good idea to offer specials and contests that are unique to your Facebook fans. Facebook is a pretty cool tool for free advertising, but for it to work, it takes time and effort.