What's your favourite piece of technology?

Today I'm gonna talk you about my favourite piece of technology that is called "Youtube". Youtube is a website developed by Google where you can watch videos of wherever you want to such as music videos, tutorials, films, etcetera; and that's the reason because it is my favourite one.
I like watching youtubers blogs. My favourite english speaker youtube channel is called JacksGap (I will leave youthe link bellow if you want to check it) wich is about a british guy who has a twin brother, and they make videos about traveling and some blogs.
I also use youtube to learn, I watch channels like "Quimitube" "unicoos", and many many others to study.
Something that I hate about Youtube is the freedom that people have to upload videos. Some people make videos about topics that can hurt people or change their mind in a bad way.
I hate the advertisements that youtube has, sometimes is too much, specially when you're listening your favourite song and suddenly and advertisements shows up, that's disgusting.

JacksGap's youtube channel: https://www.youtube.com/user/JacksGap