That said, Aereo has worked tirelessly to ensure that this type of business is actually legal. In much the same way that it’s legal for an individual to use rabbit ears to access broadcast television, it’s legal for an Aereo user to rent out an individual Aereo antenna and access, or record, TV content. However, a single antenna that sends a signal to multiple, separate users is illegal. In other words, Aereo needs one antenna available for every active user of the service

Aereo Sells Out Of Capacity In NYC | TechCrunch Saturday, February 1, 2014 @ 1:14pm