At Eggheadcafe.com, we take a very dim view of people copy/pasting answers to posts from other sites. Not only does this border on plagiarism, it also lowers our search engine rankings.
If you want to draw on information that's on another site to help you formulate your own original response to a post, that's perfectly OK. Or, if you want to post a copied code snippet, you'll need to change the snippet enough to make it unique.
Our moderators check every post for these policy violations and we remove almost all of the offending posts. Repeat violators can have their accounts deleted and forfeit contest points.