Hosting Knowledgebase

How much do you trust content available on websites? I hope you will all agree that we don’t cross-check the content available on sites. If we go to warranty page, which even most of the websites have disclaimed no warranty on the accuracy or completeness of content and warrant them for a particular purpose only.
Is Knowledgebase containing advises or strategies trusted? Although they are a potential source of information, but in view of different cases, technical support available is recommended.