I can see how this can be useful (seeing what pages are most popular), but the rating system can be flawed at times. For instance, there's no reason the Aether Cards page should have a lower rating than any of the other [insert element] Cards pages; if people are just rating on their bias of what elements they like/dislike, that's pretty pointless.
One possible alternative could be to make the rating system only available for certain pages (e.g., decks and select articles).