If you are annoyed by sites that come up at the top of search results because of misleading keywords, etc., you can add the entire domain to your personal blocklist. It won't come up in your results, and Google may use users' blocking information when ranking such sites.
I've been wanting this feature in Google for some time now. Loved it at first! Now it seems to have been abandoned or something. Ever since Google+ came out, it hasn't been working. Chrome has an addon I use but having universal settings would still be nice.