This question already has an answer here:
- What are “Community Wiki” posts? 1 answer
Then a bounty of +50 is offered on this question. As the question is changed by the owner, I change my answer in accordance with the changed question. I changed my answer 13 times. It shows this:
community wiki 13 revs swemon
After the bounty period, the owner accepts my answer. As far as I know, when one's answer is accepted, one gains +15 reputation. But my reputation has not changed.