Recently, I was attempting to answer this question, and I didn't notice part of it. I could not figure out the real solution that skv wanted, and I asked others, like d'alar'cop, for help in the comments. Now, we never did find out the answer, but it got me thinking. If we had solved the puzzle, I wouldn't feel great as d'alar'cop had helped me immensely, yet he would get no reputation, which brings me to my original question.
Would it be possible for multiple people to gain reputation from one answer?
This feature would be especially useful on sites like this, PPCG, or even other sites. I know I would feel cheated out of some rep if I had contributed to an answer, and gotten no credit. Maybe there would be some way to allow both people to get an equal share of the rep. I don't know if this could be regulated well, as there would have to be proof of their collaboration and consent by both sides.
I am not sure if this has been mentioned on Puzzling meta or even StackExchange meta, as I couldn't find this topic on either of them. If it has been, just link the question and I will delete/edit this accordingly.