1. A person who devotes their life to sharing copyrighted intellectual property for free over the internet.
2. An insult aimed at a person who choses not to follow the internet's status quo.
1. Little Billy always dreamt of being a rapper. Since he couldn't afford to buy music with his allowance, and didn't agree with it in principle, he joined his friends and became a Dotcommunist.
2. "Dude, give me the link to your MySpace site!"
"Sorry, but I don't have one."
"What? Are you some kind of Dotcommunist?"
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.