It wasn’t invented by anyone in particular, but when the building blocks were put together by all those cool scientists from all over the place, the internet became a communication tool, a retail tool, a research tool, a propaganda tool, a spying tool, a shopping tool, a dating tool, an entertainment tool, and a way of skiving off work while making it look like you’re working or studying, which is what you may be doing now.
Ultimately, though, you’re communicating, especially if you leave a comment, and that might make you a better human being.