These websites offer both free and paid services. All the screenshots that I will use are from the free versions of their websites.
The question I have is if using these screenshots be copyright infringement or do they fall under Fair Use?
If they fall under Fair Use do I need to put another disclaimer somewhere acknowledging that I do not own the copyright for the screenshots?
I have looked for a few hours for this answer and no one has given a definitive answer. I know a lot of people do this in their ebooks, I just want to make sure I am not opening myself to litigation. I understand that any answers does not constitute legal advise.