Google offers sources with its claims. I'd like the ability to Pandora style thumbs up / thumbs down these sources so that Google won't keep giving me answers f

Google offers sources with its claims. I'd like the ability to Pandora style thumbs up / thumbs down these sources so that Google won't keep giving me answers from them. I'm tempted to think that if enough people did that Google could start making generalizations, but that has its own set of pitfalls... (Even if it only generalized for me.) Still, as an individual user of Google I would like the ability to tell it not to give me answers sourced from Weekly World News.