As a follower I have you in my feed, but because I don't always have time to check my feed your post might have gone way down my list and I'll miss it. If I remember, I'll check your page now and again, but often posts are out of the pay window. So there may be people who read, but don't upvote because it's too late. I often have accounts I think important on auto vote for this reason, but sometimes I won't get around to reading some of their posts even after the payout window.