It might be because of copyright violations. The image might be subject to copyright. You have to use your image only as the profile picture.
A business holding a copyright on something can prevent others from abusing it, and make money by licensing its use.
Delayed acceleration
yes
You can. If the torrent is for copyrighted software that you are not legally entitled to have then you can be prosecuted for copyright violations. If the torrent is being used to distribute free or public domain software then the use is legal and legitimate.
They got sued for copyright violations. People were supposed to use the songs to make mixes, but everybody was just going there to download their music instead of actually using it for what it was intended for.
Corporations use short-haul applications
It's not illegal to get a copyright. It's illegal to break copyright laws. People work hard on something and get it copyrighted, so it's unfair if you use a copy of it, claim it for yourself, or use it when you aren't permitted. This includes applications like LimeWire, which should be illegal.
The copyright holder, or anyone the copyright holder authorizes.
Delayed acceleration technique
Yes, of course. Don't use any material in the vids, that you do not own the copyright for.
Use the latest copyright date.