Is wikipedia a good source of knowledge?
Not for me, at least not when I search for stuff about my country's history. AFAIK anyone can edit any page in Wikipedia. My country's government has employed lots of people to skew historical facts to their benefit. I don't want to be fed lies about history so I usually don't trust Wikipedia as my go-to source of information.
Sometimes. You just have to be careful because almost any one can edit it
It better not be. Knowledge? Sounds like a sin to me.
It is a mixed bag since there is no independent editor and not so many different sources cited usually. Also some subjects are filled with bias, propaganda and palin misinformation here and there. You have to stay critical of the info found there and do not take it at face value.
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