I wonder what the next search engine algorithm will be... I've been thinking about up-votes/down-votes. And I could swear Google experimented with Random ranking a few years back, which gave very good results, but it was a bit annoying when you forget to bookmark a site, and not finding it when searching for it again the next day. But I'm thinking random plus voting, so if you find a good site, you upvote it, if you find spam you downvote it. If you want to find that good site again, you just check your upvote history. Random sorting give small interesting web sites a chance to get found. When doing a search you can use sliders to fine-tune the order using popularity (upvote/downvote ratio), last updated, first found, region, and a checkbox to only show links you haven't already clicked on, or haven't already voted on. And there could be an option to discover sites you would probably like, based on which links you have upvoted, and what people that upvote sites simlar to you also up-voted - but you have not yet clicked on. The problem with upvote bots have already been solved by social networks like Facebook, where using like-farms, follower-farms etc are not very effective. You should not be too baised on the votes though, or you would end up with echo-chamber loops like with Spotify and Youtube. The key is randomness! A random brute force-like algorithm is often just as good and sometimes better then a sophisticated system. It would be hard to game/cheat a random algorithm.