Shopping on social media may not be big right now, but by 2015, it's expected to explode...

A new infographic by has found that “social commerce sales are expected to bring in $30 billion each year by 2015, with half of web sales to occur through social media,” writes Samantha Murphy of Mashable. Currently, one in three small businesses use Facebook, while there are over 42 million fan pages on Facebook. Seventeen percent of those sell products on the pages.

Facebook fans are 79 percent more likely than a non-fan to purchase a product, and 74 percent of fans are more likely to recommend a company or product. The social media site also drives 26 percent of referral traffic to company websites. Right now ”20 percent of shoppers prefer to purchase products via Facebook than the brand’s website”— and that number is expected to climb.