As a researcher, you need to be able to evaluate the information you find for credibility. Despite the large amount of information available, both in print and online, not all of it is valid, useful, or accurate. Determining whether or not information is reliable can be difficult; use the resources in this guide, or contact a librarian for help!
Q: Why doesn't my professor want me to use a blog post as a source?
A: In general, blogs are not considered scholarly sources because many are opinion-based and have not been evaluated for accuracy. Depending on the criteria of your assignment, sometimes they can contain useful information, but if you are looking for peer-reviewed information they usually won't fit the bill. If you are unsure if you should use it or not, talk with your professor.