I'm not expert on them but I think it works more like you request data and the dvm processes it. I believe you can also use dvms to translate notes. The screenshot I posted from nostrudel works more like a temporary feed that you request when clicking the dvm request listed.
Discussion
So like if I wanted to follow more nba fans, would that help me find them?
Ya, I blelieve so. I need to look more into the spec. https://www.data-vending-machines.org/