What happens when I press that Icon in the top right corner with a balance, where it says, "add to XXxs reputation"? I thought I should ask before randomly trying...

It appears to be a way to show your appreciation for someone, and their posts. It gives you a popupwindow with the options to say:

- I approve
- I disapprove
- And why

Fourth option is to cancel.

Probably point based.

I'm not a big fan of these things, to be honest.

_Light moves faster than sound. That is why some people appear bright, until you hear them speak._

Me neither, per se. We usually make very clear why we approve or disapprove a post and why...