Plagiarism is a very big crime in the forum, because what from needs is your personal ideas not to paraphrase or plagiarised someone's articles, I understand that forum is a place whereby your opinion is needed, and your opinion should be a cogent one, I believe that in forum you most know what's obtainable before you present or render your own suggestions to the public, in the aspect of image, when you extract images from somewhere I believe that you have to include the source of the image except the image of your work you derived by your self. So it's good to isolate referencing another person work as an author of the work with claims, so when you copy attached the reference to avoid complications or forum ban from the moderators