It would be awesome if Google had up/downvote buttons like Reddit and use them to eliminate all the fluff in search results, even if on a targeted community basis. For example if a recipe has no pictures, too many ads, not clear instructions, or no equivalent volume measurements (e.g. "4 grams sugar (about 1 tsp)") I'm likely to downvote it, and those properties can be learned from multiple downvotes.
And once you open the floodgates of allowing user feedback to influence search results, the arms race begins, with every major news site checking the referrer for Google and begging you via popover to upvote their search result, and armadas of malware-controlled botnets being launched to generate authentic-looking feedback, and so on.