Wikipedia is poisonous because of its many errors and where it is accurate it has simply stripped information out of accredited sources (such as the Encyclopaedia Britannica), in acts of plagiarism and naked piracy. The couple of attempts that I have made to correct errors (e.g. the false assertion that Sir Arthur Quiller-Couch came from Polperro, when he came from Bodmin and was famously associated with Fowey: his grandfather Jonathan Couch lived in Polperro)have been rejected by the editors. As an idea, maybe Wikipedia is a good one but it must have irreducible minimum standards and rigorous threshholds for assessment of accuracy - ah - Jimmy.
Moreover, because of all of the above, Wikipedia does not deserve to be top of the page for every internet search that one makes. Make it accurate and consistent and reliable; otherwise: bin it or ban it.