Start a page according to your url. Make some regular updates there. I think it will do some promotion in facebook.
One way is to start an event and invite your friends to that event to promote your URL. Secondly share your link on your friends wall. Third which is more traffic generator share your link in groups chat, pages, specially in commenting.
I heard recently about each page needing a SSL certificate from 1st October! Does this mean we would need a SSL certificate for our website in the fanpages?