Today I saw a question with just phpphpphpphpphpphpphphphp and the answer content was just sdfsdfsdfsdfsdf. So I added a comment like "Moderators please delete this question".
After a while I got a downvote. THe reputation tab and the popup which appears when mouse is hovered on my name showed requtation -1. -1 had a link and when I clicked that the old reputations appeared and I couldn't find for which question I got down vote.
This happened in Stack Overflow. The reputation was 341 and not it is 340.
Actually after a few seconds the moderators closed that question and had deleted it.