Well that's informative. I guess I can do five votes a day at a 100% or 50 at 10%. I gave up trying to understand the rules months ago and I just follow authors I like and vote up articles I like. I don't vote up things when they get to the trending page but if I catch them in my feed before that I do.
The rules have changed so often that I am never sure of what I thought I knew.
It explains why my voting power has varied like the price of a low volume altcoin.