On the issue of Fair Use, the guide and the link provided in this article are as per the law in the USA.

Readers of this article should remember that the laws differ slightly from country to country. Although generally the law is open-ended in that the courts are given a lot of leeway in deciding what is fair use, and consequently you may be inclined to stretch your imagination to think that your usage is fair use, it is best that you don't do so. It is always better to be abundantly cautious when using copyrighted content for fair use.

Always remember that if someone ever sues you for copyright infringement it is likely to be a large organization with a lot of financial resources. In the circumstances, even if you think you have a good case against them you may not be able to defend the case if you do not possess sufficient financial resources. Even if you do have sufficient financial resources, it does not make sense to get embroiled in such litigation which could have been avoided in the first instance with a little discretion on your side.

Disclaimer: This is not legal advice. If you are in doubt you should consult a qualified legal professional in your jurisdiction.