Every vote has a weight. Let's say your vote is $1. You can choose whether to upvote something at 100% or any other percentage, such as 50% or 1%. If you vote at 1% and your vote is $1, the result is a vote of $0.01.

Every time you vote, you spend 2% of your voting power. If you vote at 50%, you spend 1%.

You regenerate 20% voting power a day, 2% every 2.4 hours. @yoo1900's 100% vote is $86.99. He votes between 50% and 80%, which is between $43.495 and $69.592 at his current weight.

Olsm's vote on each of your comments is usually 100%, and at 100% VP, his vote is worth $2.52. This means he can vote for you 10 times a day before losing VP that he'll need a longer time to regenerate.

Sometimes he uses a lower percentage:

This may vary depending on his evaluation of the relevance of your comment or your need for monies.