Good post, but one small correction...

If your VP reaches a level under 80% it carries no value, zip, and zero! Your vote for your Steemian friend DOES NOT count.

Voting when your voting power is under 80% still counts but at a lower level.

Try turning the coloured circle bar on the top left in Steemworld to see how your vote value reduces.

The importance of 80% is that your voting power can regenerate 20% in 24 hours.