Letting you blacklist a site is one thing. They could improve upon it by letting people downvote/upvote pages and then using their extensive information vault to decide who is somewhat reputable or just similar to you.

I mean, I am 40 years old programmer/entrepreneur interested in sports and traditional board and card games. I like nice restaurants and hotels and even sometimes write Google reviews on them. I have my Gmail account since the beginning and I am paying YouTube and Google services customer. I am using Google phones since the Nexus. Google knows who I am, what I like, where I visit. It's pretty good at estimating revenue of my company. What about using the info for something useful for once and just show me pages people like me liked and don't show me pages people like me think are spam/scam? Please?