With 2 million paying subscribers and annual revenues approximating $78 million, Angie’s List is one of our favorite success stories in the online subscription business. Yet, like most successful companies, the site is not resting on its laurels.Angie’s List is in the process of launching My Storefront, a e-commerce platform that would allow vendors with an “A” or “B” grade to sell directly to Angie’s List subscribers. Goods and offers will appear in members’ search results and within each vendor’s profile, according to an Angie’s List spokesperson.Moving into software services is a growing trend by subscription and membership sites, as evidenced by The Boston Globe’s recent application to sell top level domains. However, Angie’s List is staying closer to its audience’s needs by providing My Storefront capabilities to vendors. In addition, Angie’s List is charging a 9.5% processing to vendors, not cross-selling to subscribers. This is a smart way to leverage vendors for revenues, a move we’ve seen on other subscription sites, like RFID Journal and its sister site, RFID Direct.