Thanks for writing about dust votes. I am fairly new to Steemit and had no clue about the rounding down. Since I have a low SP, I must have wasted some voting power and others who upvoted me probably also wasted they voting power on me when we might have been more strategic in the way we voted. However, there might still some symbolic value in those dust votes: even if I don't get any material reward on some of my posts or comments, I value the actual upvote as a token of recognition, and I am encouraged when I know someone read and appreciated what I had to say.