Okay, we have a problem. I just realized that my clicks this morning didn't count. Just for the hell of it, I clicked my own link a couple minutes ago and got 10 points. I can only think of two reasons why my click (and most likely others) aren't working.
1) People aren't waiting a full 24 hours before clicking the links again. My guess is that the majority of people are clicking around the same time everyday. Problem is, occasionally they click a little bit earlier than the day before. Thus it hasn't been a full 24 hours, so the click doesn't count.
2) Another possible issue is the add-on. Maybe when their site gets bombarded by the same ip address, they void the clicks. I already know my points haven't counted for today, so I can test this theory if someone would be willing to check their points before and after I use the add-on.