Plagiarism is a serious offence, but it can sometimes be hard to determine if you've actually plagiarised or not. This flow chart helps you determine if you've plagiarised, and explains the severity of each type of violation.
Curtis Newbold "The Visual Communication Guy" is back with another helpful chart that can help you identify whether you've accidentally copied somebody else's work, and how big a deal it is. Just follow the chart step by step to make sure you're not copying someone else's work or see how much you need to tone down the use of their ideas.
If you're more concerned with pictures, check out Newbold's flowchart for using images on the internet.