The rating buttons don't work for me in circloO, and I can't see comments in that game. I've tried this in Chrome, Firefox, and Edge. This problem may have to do with the game being in HTML, since I don't have these problems with any other game on the site. Then again, circloO has several ratings already, so not everyone has this problem.
It must be a problem on your end, because it works perfectly for me on Chrome. Game is playable, no issues, all comments viewable and the game can be rated when using Google Chrome (have not tried with any other browser).
I tried rating and adding it to favorites, but I couldn't get it to work either, nor was I able to see game comments for the game @Patrick2011. I used FireFox instead... I will forward it as it seems to be a website bug indeed.
EDIT: Just checked and they are working on fixing the issue! Thanx for pointing it out though!