Educational/nonprofit uses are favored over commercial uses. While we may consider Wealthy Affiliate to be a 'university' - the courts will not. This is a .com, not a .edu domain. There are several uses that are explicitly appropriate for fair use, i.e., comment, news reporting, research, teaching, etc. However, a finding for fair use depends on the application of all four elements, not just its purpose.

Uses that are "transformative" and not just a reproduction are favored by the courts. When copyrighted works are transformed into something that has a new use or meaning, i.e., quotations used in a blog or perhaps an infographic or other multimedia project, they are seen in a more favorable light.