Ya know what? I'm gonna toot my own horn today On Here Specifically.
I have already received at least a dozen thankful comments/replies for letting people know they can slow down door closers. A lot of people have been living with irritating bangs in apartment buildings and whatnot.
And thanks to watching a YouTube video, their life is now better. I didn't sell anything to them, I just decided to share some knowledge in my own (hopefully entertaining) way.