I once saw a really good answer in the comments, but the question was unanswered and I (please don't say I'm a plagiariser) took that answer in the comments and made it into an answer and reworded it differently.
I didn't want the question to remain unanswered, but the answer I put (which was the only one) got -3 votes and I ended up deleting it.
This happened again, but that time I credited the person, and I got -5 votes on it, so I deleted it again.
Finally, this happened on another SE Q&A site, but I didn't cite the author this time, and the answer is at 0 votes.
Can anyone explain why people don't like this?