Information Bubble

Much in the same way that the 2007-2008 Housing Bubble was founded on incorrect assumptions, about the housing market, I wonder if Google's PageRank and related algorithms may be flawed in that they are based on what people visit more frequently. The assumption is that more people will visit "correct" or "better" information-bearing sites. With the risk of "Fake News" and Google looking to respin it's algorithm, I wonder what is in store for us online as we seek information unbiased by ads, politics or other swaying factors.