It’s hard to imagine that Wikipedia articles are actually the very best source of information for all of the many 1000s of topics on which they now appear as the top Google search result. What’s much more likely is that the Web, through its links, and Google, through its search algorithms, have inadvertently set into motion a very strong feedback loop that amplifies popularity and, in the end, leads us all, lemminglike, down the same well-trod path – the path of least resistance. You might call this the triumph of the wisdom of the crowd. I would suggest that it would be more accurately described as the triumph of the wisdom of the mob. The former sounds benign; the latter, less so.
wikipedia’s information architecture plus positive feedback loop mean that is is ever more the #1 result for common terms.