When I reported a post, a thread was created with this title The title makes it look like fullmetalbabe and I have some kind of issue or problem. I reported a spammer post that had nothing to do with FMB.
Yes, a single thread is used for reports on the same post. In this case, FMB reported it first and then your report was second and therefore added as a reply to her thread.
vBulletin prioritizes to first level reporters. Meaning whoever reported first, will get the tread title, who ever reports after that, the software will create a post in that reported topic.
