Ways to determine objectivity
1. Is there advertising? Is the website selling something?
Websites that sell products or adspace are profit seeking enterprises. They are less likely to provide objective information.
2. Persuasiveness: Is the author persuading the reader to agree with him? Is he providing more than one Point-of-View?
An author who does not provide information about something with which he does not agree is not being objective. A balanced report, on the other hand, provides information on all sides of an issue and lets the reader decide what is right.
If an author provides information on another's point of view, but uses pejorative language (for example: stupid politicians, that person is a jerk, ignorant people) is NOT being objective. The use of this language is meant to influence you to support a specific point-of-view.