This page is about all the "miscellaneous" stuff you find online - a page on an organization's website, a Facebook post of a screenshot of a Tumblr post of a screenshot of a tweet, a Wikipedia article on your research topic, and pretty much everything else. That's really broad! We've tried to break it down here with specific tips for certain categories of resources. And remember the CRAAP test - Currency, Reliability, Accuracy, Authority, and Purpose (go to the first page of this guide for a refresher). That can be applied to any resource, including these ones.
Try investigating a couple of these questions in your everyday web use - it's pretty easy, it's a useful habit to build, and you may be surprised by what you find!
You probably couldn't/shouldn't check every factual claim you see on social media. ("My cat is licking his butt!") But there's a lot (A LOT) of nonsense out there; everyone should have some strategies for identifying it and avoiding spreading it. Some tips for getting started:
Wikipedia: often accurate, rarely reliable. Some areas are edited thoroughly while false information in others goes untouched. It can be great for getting a quick summary of a topic or settling a debate among friends, but definitely not as a cited reference in an academic paper. What to do if you've found some useful information on Wikipedia, then?
Checking for accuracy. If there's a citation on the page, check and assess the source cited. Depending on the kind of source, you can use the strategies elsewhere in this guide to evaluate it. If there's no citation, be skeptical and try to verify the information using other sources.
Mining for sources. If there's information on a Wikipedia page that you really want to use in your research, check the citations and the references at the bottom of the page! They could point you to sources that are acceptable to cite in your scholarly work. Plus, those sources might go into more detail on the topic. But be sure to evaluate those sources too - many Wikipedia citations point to sites that aren't that reliable themselves.