Benefits
The benefits of engaging in social media vary depending on your type of business. The more consumer and public focussed companies will tend to benefit more, in particular businesses with a strong leaning to web only based operations More traditional manufacturing and engineering companies might it a little harder to see a compelling requirement to embrace social media, however, it can still benefit even the most incompatible of market sectors.However, if you can get some 'LIKES' for your site, it will make your site look a little more credible and more likely that you will gain business.
From SEO perspectives you get a link from Facebook to your site which is a small benefit plus as your 'LIKES' go up your search engine rankings can also improve. However, for small companies this will never amount to much.
It is worth noting though that Facebook can be used for a lot more, but to learn what you the client will need to explore Facebook and figure out how you can use it further to your benefit.
