Facebook offers ecommerce companies an opportunity to both market their products and connect with their customers. Traffic to Facebook has increased by 149% from February 2008 to February 2009, according to Hitwise, and it’s not just from the young crowd. Visitors over age 35 have increased by 23% over the same time frame. . .
http://www.practicalecommerce.com/articles/1055-Selling-And-Socializing-On-Facebook