Writing Style--citations, grammar, precise writing rather than generalizations, no personal attacks rather than answering an argument.
Author--what are the author's credentials? (e.g. Education, Background and Employer. What else have they published? *Check WorldCat, Google Scholar & Article Databases like ProQuest, PsychInfo, or Scopus).
Read--read the information and decide for yourself. Synthesis distinguishes research from reports.
Purpose--(look for "About us") Any bias? Is it for commerce, to advocate or inform?
Date--Publication or Last Revision Date