"You should keep your profiles personal and create a page for your business. An example of a niche online business page can be seen here. These guys run a small software company and do a good job at getting followers in their niche because of their page. Pages are more customizable than groups, and you can have an unlimited number of fans.
The best part is that Google indexes pages.
All fan pages are public. Your page will show up in the Google’s search results if someone searches for your company or for keywords that you cover in your page. “If you are looking to build a brand and market your company, you will want a fan page, hands down,” says Shama. It allows for a lot more freedom and visibility when building your Facebook community".
Via Antonino Militello