NO
That would depend on what you upload...
i dont know try uploading them to a computer then sign in or sign up to youtube to upload them
It depends on what computer you have for wizard101 to mess up your computer.
depends on what you download can limewire mess up your computer
Making them does not but uploading them and downloading them does.
if you use it improperly, it can very well mess up your computer.
Minecraft doesn't mess up your computer. Minecraft is a malware free program.
You should upload videos and other content at youtube.com. Youtube is reliable, easy to use and is used and watched around the world. Plus you don't want to just search the web for places to upload. It could potentially open your computer to security threats. Go to youtube.com. Click sign up register and you'll be on your way to uploading videos.
No it cannot
Not that I know of, but it might mess up your game if you input too much.
If the Windows is messed up, then yes. It will mess the computer up.
One can upload videos to the video website, My Video, by first signing up to the website. After that, one can begin uploading videos for others to view.