Is the difference between ads and informational content clear?
Are you asked to give money and/or pay for access?
When using an online source (especially websites), are there also items for sale from the same site?
What is the purpose of the information?
Educate? Sell? Entertain? Persuade? Swindle?
Are the arguments logical?
Are statistics cited?
If the author didn't collect the data, the source of the statistics should be cited. Un-cited statistics may be fabricated or falsified.
Explore the image below -- mouseover the targets to learn more about evaluating the objectivity of information. This example uses a website, but the techniques can be applied to any source (e.g scholarly and popular articles, books, newspapers, trade publications, etc.).
"Amazing Facts." The Cleaner Earth Project. The Cleaner Earth Project, n.d. Web. 23 Jan. 2013.