Facebook Marks Milestone With One Billion Users

As Facebook celebrates the milestone of having one billion users, social media experts are taking a look at how social networking has evolved.

Consultant Mari Smith said that social media developments have changed the way that people conduct business.

"In essence, we have removed the middle person from a business standpoint. Anybody can put up a Facebook page and put up various web sites and blogs and drive traffic from other social channels," said Smith.