Yahoo executives got way ahead of themselves in acquiring Broadcast.com, an online television site founded by Mark Cuban, for $5.7 billion in 1999. Slow dial-up connections made watching video a test of patience as did the laughably meager library of shows (think 1960-era monster movies and Victoria's Secret fashion shows). The service soon disappeared, as did the executives who engineered the deal.
Apple's iTunes Store is nearing 50 billion ? billion! ? downloads. Here are the most-downloaded tablet apps ever.