I've noticed lately that a particular member whom I won't name is answering a lot of questions in a way that indicates he might not clearly understand the concepts he is attempting to address. Just today I saw a question that appeared to be a follow up to another question asked a few hours earlier. About 75% or more of this user's answer to the second question appeared to be verbatim quotes of parts of my answer to the previous question.
While I might occasionally answer a question with similar information to a previous answer, the reason I would write an additional answer is because I might feel the previous answer didn't communicate the information in as clear and concise a way as would be hoped. Similarly, I have written a few answers in response to a question that incorporated information from answers to several other questions after discovering there was no other single question that collected the necessary information in one place.
What is the policy concerning plagiarism here when the source used is another users input to photo.stackexchange?