As conventional website adoption slows with surging social media use, a study by research firm IDC predicts that Facebook and other social networks will become key online platforms for home-based business promotions and commercial activity.The IDC study found that about 40% of home-based businesses today use social networks to promote their business. While social networking is still more often used to supplement websites rather than as a substitute for them, roughly 20% of home-based businesses currently promote themselves on social networks and don't have a conventional website.In another sign pointing to rising social media use, IDC found that nearly 40% of home-based businesses selling online do so without a website of their own, leveraging the high traffic provided by major online...