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Hello everybody, I am new to SO. I ask a question and didn't get an good answer for a week. Now, to maintain my accept rate, I answer it myself and I accept that answer. Next day I saw a loss of 15 reputation. Why did this happen? There may be some other reason, but I think nothing will decrease reputation by 15. I hadn't set bounty on my question.

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Just to add to S.Mark's answer; if you go to you should be able to account for everything. – Marc Gravell May 11 '10 at 5:10
@Marc Is there any link on my user page for ? – Himadri May 11 '10 at 5:22
up vote 8 down vote accepted

You don't lose or gain reputation from accepting own answers.

Probably, you got 2 downvotes in this post, which is -4 and may be someone revoked upvote on your answer, which will be -10, so most likely you lost -14 in total, if you remember you had 90+ the other day.

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@S.Mark I didn't understand 'someone revoked upvote on your answer, which will be -10'???? I saw my reputaion was 103 yesterday. – Himadri May 11 '10 at 5:23
@Himadri, for example, someone upvoted one of your answer, you got +10 right, but if they undo it later on (probably within 5 minutes), then you lost your +10, so apparently you lose -10. – YOU May 11 '10 at 5:39
oh, 103? so probably, someone revoked the accepted answer. its 15 points, now you have 84, there is -4 from downvotes, another -15 could be from unaccepted answer. 84+4+15 is 103 – YOU May 11 '10 at 5:41
probably, your answer on this or this question was accepted before, but question owner notice that other answer is better, so he accepted different answer, and in the meantime you got 2 downvotes, so basically you lose -15 and -4, which results in 84 from 103. – YOU May 11 '10 at 5:45
@S.Mark OK..Thanks. You are right. My answer to the question… was accepted before. Now I got every thing. Thank You. – Himadri May 11 '10 at 6:23
Welcome @Himadri – YOU May 11 '10 at 6:26

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