TBH, I don't take crap from people who say that Wikipedia is crap. Wikipedia seems to be the next best thing for information next to big-money search engines like Google, Yahoo, AOL, Ask, etc. Wikipedia's policy that everyone can edit, imo, seems to be it's strengths. However, it's safe to say that Wikipedia does get it's fair share of trolls. Otherwise, what would the internet be like without trolls?
Back to point, Wikipedia should be in the top 10 list for usable information. Again, the search engines generate more results on the topic whereas Wikipedia can narrow down to more important information. But, it depends on what information you need.
My school's created this 'Wiki Free School Zone.' So, I can't get on Wikipedia in school. I have to use the crappy school search engines like Nettrekker and our school's homepage search engine. It's crap. Wikipedia is useful for all and although it has trolls, it should still be used. If I find any information that's wrong, I go into the article and fix it. It's just the right thing to do. Obviously, the trolls don't stop Wikipedia from being banned from all schools, not to mention a very reliable source of information.
Just my 2 cents.
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Actually, 3 cents, 3 paragraphs.