I'll be open and honest about my upvotes but first it's worth mentioning they're not worth much compared to some others, and all I am is someone enjoying the music. Total outsider. Not a representative of Vibes. Even if they did set up some guidelines for people interested in supporting the music, I'm under no obligation to follow them. And I'm sure there are several more just like me out there.
First, I have to see the performance. If I miss it, they won't get a vote. Also, at times there are several performances to enjoy but I only have a limited supply of voting power. Sometimes I have to lower the percentage in order to spread it out more. Sometimes I can't vote due to those limitations then end up missing performances as more are coming in when my voting power is charged up again.
In the event I stumbled into something that doesn't interest me somehow, I will not stop to tell them what I think they did wrong. That is not a comfortable conversation to have with anyone.
All I am is someone out enjoying music on my own time. I'm not a music critic or a judge.