I've tried to track all three metrics and they certainly do help. I hit audio on every read still, highlight at least one section - and always comment.

What I'm noticing and think still happens:

Those who read perhaps 50 or more stories a day...it affects how much gets paid. I think? I've had a few random data points that seem to suggest that...

It's just so hard to tell -

Love btw that you attached that series!

Makes me smile and giggle every time... ;-)