This question already has an answer here:
I should get some other opinions on this before I let it irritate me...
What is the general view on the following scenario:
One poster answers a question correctly and pretty thoroughly. Half an hour later, another poster answers the question again, almost word-for-word, but with perhaps one small additional feature. E.g. it could be a Magic question, and the second answer gives the paragraph number of the rule in the Magic Comprehensive Rules, whereas the first answer just quoted the rule.
In some respects the second answer may be better as it has a small amount of additional content that the first answer lacked - but from another point of view, it could be deemed a sort of blatant parasitism, doing very little work other than making a tiny change that could have been suggested in a comment or edit instead.
As I say I see pros and cons to this kind of activity, so I just wanted to poll others on what they thought. N.B. I am not suggesting that one of two posters "simul-posting" an answer should be penalised due to the unfortunate accident of failing to hit the return button first... but half an hour later, it doesn't seem so likely that this is what happened, surely?