Website promotion is very important. It let's people know about the site and drives traffic to web pages for greater revenue.
Facebook is the most popular social media network today and it is used by almost every person who has a website or blog. Why? Because posting links that lead to your website on your wall or specialized FB page would give you a considerable number of views especially if you have a lot of friends and followers.
But if you promote your website using Facebook ads, it won't matter of you have followers of not. Your website or any link that you choose will be shown to a lot people, depending on the amount that you have paid.
Have you ever tried using Facebook Ads? Did you have great results?