Facebook and social media generally are now major ways to promote a website.
Social media users usually give away a lot of information about themselves, hence it's interest to marketeers.
On the downside, social media users are generally not in buying mode.
If your business has a social or interest dimension to it, social media can be productive. Like search, there is free candy in the organic activity. For most businesses this is unlikely to be of serious value.
Nevertheless it is well worth most businesses maintaining a Facebook profile and monitoring social traffic.
Facebook offers a variety of ways to advertise, from promoting posts to driving traffic to websites or simply placing ads.
At the moment, we do not have anyone with a particular expertise in Facebook to offer a service. However if you are interested in exploring the potential in this medium, do get in touch, we are always ready to learn more about it.