Can you create a website? Can you make it look great? If so, you can see how a person with limited knowledge about a subject (but with good knowledge about the web) can fool people into thinking that they are experts on anything. In fact, if you wanted to, you could go to Wikipedia and submit an article detailing your experience in Vietnam! (FYI: Don't do this, even though it would be very funny.)
So... how do you evaluate an internet source? What do you even look for?
FIRST: Look up these words to figure out what they mean. SECOND: Find the Purdue OWL guideline for evaluating sources. Take notes in your binders and learn from what you have read. THIRD: Get into groups to discuss sources. As a group, find a valid source. As a group, find an invalid source. Discuss what makes them valid, reliable, and accurate. FOURTH: Take a quiz to see if you know what you are talking about.