by the way, this challenge :
If you joined in december 2017 or jan 2018, try finding out how much SP is required to have your full upvote be worth $42.00 (at 100% weight and voting power), and tell me in the comments below: if you get it right, I will upvote you!
is still up for grabs! Using https://steemnow.com/upvotecalc.html it shouldn't be that hard :)
RE: Why are my upvotes and rewards going down? - anomiej's complete guide to how upvote strength works