It is a best practice to promote your facebook page if you are wanting to get visitors for whatever reason ( eg. selling products or services or promoting a cause) How do I do this you ask? Well, it's actually quite a simple concept. Mainly, you promote your Facebook page the same way you would promote any website. Post on blogs with similar content, pay for ads, etc.
However, most people dont know that your Facebook page can also show up in search engine results. Yes, your facebook page can show up in Google, Bing, Yahoo, Alexa, and other search engines. You could pay for this to happen with Google Adwords or Bing / Yahoo adverts, but why do that when you can get similar results for free.
To do this you must obtain backlinks to your Facebook page, group, and/or profile. The more quality links from other websites, such as <a href=www.fbmarks.com>Facebook Bookmarks</a>, to your Facebook page or group, the more likely it will show up. This also determines how high up in the search results your Facebook page will be. I have some Facebook pages on a certain subjects that get listed on the first page and even the first result for certain search terms on Google and Bing.
So, the moral of this story is: Submit your Facebook page to other websites that allow you to submit "dofollow" links to your Facebook Page. Make sure you post to the right categories or these links could be judged as spam and could actually hurt your page. If you add to directories and put links to your page on all your other social media sites, you should do fine.
www.FBmarks.com - Promote Your Facebook Page
www.myspacefriendlist.com - Social Media Marketing Tools
Disclosure: I am long FB.
Additional disclosure: Facebook is great for marketing. If you don't have a Facebook page for your business, you better get cracking.