The use of social media has expanded a great deal in the past decade. As a result it is now easier than ever to find good, original content. However, with content being easily found and shared, it is sometimes hard to distinguish who owns the copyright and whether you have any right to use it - even if you acknowledge the source.
It is true to say that copyright law can be different from one place to another, but the fundamental principles generally remain the same. We found this Inforgraphic, created by the University of Florida, very insightful - the infringement case examples were also very interesting.