Aereo, a startup that streams broadcast television over the internet, is headed to the Supreme Court tomorrow just two years after its debut, and stakeholders across the internet and television industries are watching closely. It will determine to some degree how broadcast television will be offered online in the future, and could restrict cloud storage services like Dropbox and Google Music as well. This unwieldy method was designed to fulfill very narrow legal conditions that supposedly allow Aereo to stream broadcast content without paying the networks for the privilege. Aereo, which charges subscribers between $8 and $12 a month, is not a piracy trick, as broadcasters have alleged, but a genuine innovation that consumers should be able to choose, writes Aereo investor Barry Diller, the media mogul credited with the creation of the Fox network.