When I was working at YouSendIt, we had over 2 million daily site visits and over 30 million active users. Constant split & multivariate testing kept the home page elements constantly changing. This was one of my designs that I particularly like for a number of reasons: it stripped down the sometimes cluttered messaging, allowing a visual concentration on a strong "Start Today" call to action. It was designed to be served to buckets of users interested in the Enterprise product. The use of highly recognizable brand partners was designed to underscore the strength of the offering and boost marketing conversion lift.