[akanevsky]

Yes, but do install counts represent the "greatness" of a modification?

Yes, they certainly do. When people like a modification, they click install. When they decide they dont like it, they click uninstall. There are 50+ installs on most modifications. On the contrary, it's hard to find a modification that has more than 5 ratings, and most of those ratings are negative, because (mostly) only highly irritable people who like to give headache to the authors even bother clicking it, and they rarely click anything different than "1". Therefore, unlike install counter, it serves no good purpose