You don't need a cable-TV subscription to use Aereo.

WSJ: For Live TV on the Go, Aereo Is Impressive But Limited

The majority held that by providing individual streams to consumers according to their specific commands, Aereo was less like a cable-TV system than a consumer streaming a TV show from a Slingbox in one room to a TV set in another.

FORBES: Barry Diller's Aereo Streaming-TV Service Wins Big Ruling Against Broadcasters

So while Netflix is busy working hard on becoming the next type of TV station, Aereo is working on becoming the next type of cable company.

FORBES: Aereo: The future of TV is here today

The broadcasters are seeking an injunction against Aereo, claiming the company is allowing consumers to bypass cable retransmission fees.

CNN: Ad-skipping DVR prompts fight for the future of TV

So Aereo is renting the antenna and the infrastructure to its customers just as cable companies rent to theirs.

FORBES: By Putting Over-the-Air Online Legally, Aereo Clears The Way For ALL TV Everywhere