Internet was always full of spam. But somehow Google was able to correctly categorize it. Now it seems like Google is not keeping with it. It seems like that si

Internet was always full of spam. But somehow Google was able to correctly categorize it. Now it seems like Google is not keeping with it. It seems like that sites which might provide trusted information are not ranked well. It is interesting that these sites do not have Google Adsense (since they are mainly run by schools, public institutions, etc.) The same is happening with YouTube. I think it is definelly possible to sort results better (pure engineering problem). But there is really no short term insentive for that. Maybe in long term this will help Google to stay on top but that is not 100% clear: it is hard to predict how content discover will look in the future.