Possible Duplicate:
What to do with answers that build heavily (if not copied outright) on an existing answer
I spotted a user who copy-pastes other answers and adds just a little bit more information, like a short code snippet. Technically the answer is slightly more informative, but it would have been better to just edit the existing answer.
Here's the most obvious case where the answer is practically the same; here there are just minor additions. This answer even has the exact same opening paragraph.
Should these kind of answers be flagged or are they ok?