Isn't it funny how people seem inclined to believe almost anything they hear or see on the web? It's amazing how gullible some people are. Apparently confirming facts or information is not a concern; it should be!
The web has become a place where fantasy can seem like reality and you must be careful to do your best to distinguish between the two. Sometimes it's easy but most of the time it's very hard.
So what's the answer? Use common sense! Become a detective and try to confirm what you see and hear on the web; don't take everything at face value. Wikipedias are a good and mostly reliable source of information. Also make sure that a variety of Search Engines become your friends!