It's a very grey area. YouTube's TOS prohibits its users form downloading from the site full stop (except if they permit it) and copyright holders own the content. If you are copying from YouTube it may be considered akin to recording a VHS (which is fully legal).
It is the same as downloading songs off limewire so yes it is illegal.
go download real player, it downloads videos and music that stream in your webbrowser. its not illegal. Google even endorses it.
Downloading music and videos can be either legal or illegal. The same goes for computer programs. If you download from sites where you pay a reputable source , then it is legal. An example of a reputable site to download from is iTunes. If you download from sites that do not ask you to pay for songs/videos/programs that you can get in places you must pay, the download is almost certainly illegal.
Download it off Minecraft.net and buy Minecraft for your account. Be sure to watch the videos. And its not illegal if you download it of the official Minecraft site.
LimeWire is completely legal. However, the purpose many people use it for is not. Downloading copyrighted music, videos, or programs without the permission of the author is illegal. This is called "copyright infringement" or "piracy."
Downloading is not illegal. What may be illegal is downloading content that you do not have a legal right to use or possess.
Downloading songs is not illegal. However downloading songs that you have not purchased a license to download is.
It is illegal if you didn't buy a license for downloading it.
Illegal downloading from the internet is no different to theft?
Yes it is illegal as you are downloading copyrighted material
Any videos that you have saved after downloading will be in your iTunes app where your music is stored.
Yes, using an application like TubeSucker, you can. However it should be noted that Videos are copywrite their respective owners and downloading videos (say, music videos) that are not released under creative commons without paying for their licencing is illegal.