I am not sure how helpful this might be, but the idea itself is interesting, i think. So, you create a page, let's say about clowns. Note, that you do not own a website, you just create a facebook page. And then you start posting all the clown-related news/articles/tips/pictures/videos/ that you can find online to your FB page. After a while, some Fb advertising will get more people to join the page (if they're into clowns of course). So, this way you get to build your list, and, for that matter, to advertise other websites by linking their webposts on your FB page. I believe, this "trick" could be used for promoting someone else's services (specific niche would go better i think).