If I were to find out that someone used my original work in their writing and did not give credit i would be upset. A person spends their own time and effort writing their things. This is time that can be used doing anything else, and yet they want to write this specific writing. Then for someone to go in and "steal" their work is ridiculous. It would be like a huge slap in someones face. I would feel like my writing means nothing and I spent all that time doing nothing. I would do whatever legal actions need to be taken to fix the issue. I would need proof that, that work is my original work and that the credit should be mine. I never use someone else work without giving them credit. I feel its so disrespectful to do that...