I've noticed it too. Not so much on my own posts (though 40 odd votes out of 1100 followers does seem a bit low). But my sister has just joined and on her post yesterday she had 57 views and 17 votes. So really people, 40 of you were interested enough to click through to it, but not impressed enough to upvote?
Part of it, I think is the newbies not realising it's protocol to show appreciation that way. And when I can be bothered, I will sometimes explain it to someone who has commented but not upvoted. But so many new people - how do we educate them all?