A:AnswerThe item you are looking for is an HDMI splitter. Tons of retailers have them. In this case, you are looking for a splitter that goes from 1 input to 2 outputs (they also make the reverse, where it allows multiple devices to be plugged into one port on the TV).
A:AnswerIf you visit youtube with Chrome browser while connected to the same Wifi network as the Chromecast, it will show a Chromecast icon. Just click that and select your Chromecast. Chrome also has the ability to stream pretty much any other tab by clicking the icon in the upper right hand menu bar. So you can stream other video sites that don't have native Chromecast support. Note that this method does have a pretty significant delay in comparison to the native option.
A:AnswerThere are browser extensions to disable this behavior if you stream from a computer, but there isn't a way to turn it off that I know of. I do think it is app specific, though, so I think it is something with how the App developer (Netflix) is working with Google's Chromecast API.
A:AnswerIt's not a paid service. Think of it more as a simple wireless connection between your device and your TV. Whatever is on your device, you can get to stream on the TV.
If you subscribe to Hulu, you can put the Hulu app on your device and then use the Chromecast to stream it to your TV.
A:AnswerWhen you open apps like YouTube or Netflix, there is an icon you tap and it connects. Your phone then becomes a "control". You are not actually playing things from your phone. Just seems that way.
A:AnswerNo, but you can install it to your phone or other device and cast to the chromecast. Nothing at all can be downloaded to the chromecast, it's only a receiver.
A:AnswerYou can connect multiple devices, for example if you connect your smart phone to it and your buddy tries to cast something you can as long as you are in the same wifi connection.
A:AnswerFrom my understanding, you cannot do this. You can join a regular Chromecast to a Chromecast audio group and stream music to both devices at the same time, but I do not believe this is supported for video.