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I do this myself often, and it is very convenient in many cases. I see this time and time again, and it makes me wonder about the intent of the poster. Due credit needs to be given when a copy and paste is done. Either tell us it is a C&P or provide a link. It is intellectually dishonest to allow someone to think it is your words when it isn't. To be completely upfront in all respects, it seems to me that we would all want to follow a simple guideline like this. When you copy and paste and either deny it or refuse to answer about it, it tells the room you are being dishonest.