Sling TV gets a great cloud DVR, but there's a catch

Sling TV is sweetening its Internet-based live-TV service with a feature typically associated with more traditional cable plans: a DVR. But unlike a normal DVR, this one is based in the cloud.
Sling isn't the first Internet TV service to offer a DVR; Sony's PlayStation Vue offers one, too. However, Sling TV's cloud DVR — which launches in beta on Monday — has an edge: The recordings, up to 100GB worth, have no expiry date.
“Unlike other OTT [over the top] services, we’re