they are copyrighted images to you are not allowed to copy them
No you cannot use Disney images on cafepress. Disney images are copyrighted and you are not allowed to use them at all. Not at cafepress and not somewhere else. If you would do so you would break copyright law and the chance you will get sued is very high. If you have seen people using Disney images on cafepress then they probably have permission from Disney to do so or they are doing it illegal. If cafepress will find them the designs will be removed. The plain rule is that you cannot use any copyrighted images on cafepress. If you upload images to cafepress you agree to that rule.
There is no magic number for the amount of copyrighted content used that will lead to a copyright notification. Fair use is a very ambiguous rule and is judged on a case-by-case basis. To be safe, avoid using any copyrighted content in your videos at all.
Overwhelming viewers
In academic writing you want to avoid using a personal voice, such as I and me, as much as you can. You also want to avoid using a passive voice. Examples of this are: has been, have been, is ---ing, should.
Some photos on Flickr are copyrighted, others are not.
Yes, you can use online images in your Roblox t-shirts. However, be sure not to use copyrighted material in your shirts without permission. If in doubt, draw your own image instead of using someone else's.
Always
One can avoid polarization by using positive language in order to reach a compromise. You should also try to avoid using absolutes in your language.
The precautions that you should take when using 6.0 hci is that you should avoid inhaling the fumes and also avoid allow the solution to touch your skin.
global
Using slang or “filler” words
Technically it should be fives, but you should avoid using it just in case/