This is an interesting article worth a quick read.
I think it's a good move to make the likes and repost amounts an option for the site administrator to be able to turn them on or off. I have a younger demographic and I don't think it is needed on my site.
Increased engagement is good for business, and the impulse to check the score is an easy way to keep users coming back. As Twitter CEO Jack Dorsey put it at last year’s WIRED25 conference: “Right now we have a big Like button with a heart on it and we’re incentivizing people to want it to go up,” and to get more followers.
But these tactics are attracting increased scrutiny, about their impact on the health of the internet and on society at large.