Hilariousandco has a point... Just report one post and state everything, ex. "there are similar post from this forumite on different threads/boards" that way, we can check the profile of the said person and do what's necessary...
What I have done in the past is report the 1 post stating " spamming same message in multiple threads" or something along those lines.
Yes, what I do when I find a post to repost is to look at the posting history and if I find more such posts, I write look at the posting history.
Lol! OP has given a lot of work to Lamborghini member Hilariousandco.