Facebook is a great way to optimize your social media presence. There are a few ways to do it, but the most common right now is to create a fan page. This is a page where you let your clients and their friends know about specials, post sneak peaks and interact with your clients on a more informal way. The best part of about Fan pages is anyone can join (note yes if you have a stalker or someone who has been unkind you can block them so you are not without recourse).
To make your fan page stand out to first time visitors you can create a welcome page. This is actually a great way to customize your entire facebook experience for all your clients. YOu can create custom pages that reflect a promotion or something unique to your business (as well as a landing page).
How to add a welcome page for fans.
Next up SMO using Twitter
Shannon