Open education resources, especially those such as Wikipedia and YouTube (which rank high in Google search results), are being used more and more often, not only by students, but also by educators. As both a Wikipedia and YouTube contributor, I have mixed opinions. Even though the quality of the resources is increasing in many areas, finding the good articles/videos is still a skill in itself and requires good judgement. Will students lose faith in their lecturer or school, if these people rely heavily on Wikipedia, YouTube or similar web sites? Or will students become more actively engaged in their own learning, as a result of these resources? What advice can we give other teachers, or our students in regards to these resources? For example, check at the references at the end of the Wikipedia article rather than just reading the article, look at the statistics and likes of the YouTube video in question, see who created it, research the presenter or company, and any others? How can we make sure that students will use sufficient critical thinking in using publicly edited open resources? What is the limit, in terms of how far schools or teachers should go? Does it also depend on which subject we are teaching? What are your experiences or opinions?