I think the FAQ on StackOverflow is slightly confusing. To quote one line regarding reputation changes...
answer is accepted +15 (+2 to voter)
I interpret this to mean that the person who actually accepts the answer gets +2. It certainly doesn't mean that anyone who had voted on the accepted answer gets +2 (which would bring untold amounts of chaos). But the term "voter" implies some integration with the like-wise-named system, the voting system. On the same note, the act of "accepting" an answer isn't really voting at all. So does it actually mean the OP only gets the +2 if the OP voted on it before accepting it?
Admittedly, I don't even know if "accepter" is a real word at all, and it certainly sounds awkward on the tongue, but I think it might be nice to make the FAQ a bit more proper sounding.
...filing under 'feature-request' since I think that's appropriate for this...
I did find the answer to this post which included a different verbiage. Probably from a time before land.
Also, in the current FAQ, it should be noted that the other 3 listed reputation changers all relate to voting directly, so it really is strongly implied by saying "voter" that this +2 is also related to voting.