Just reporting one and commenting to take a look onto the spammer's post history would do good.
I've had mixed results with this on occasion. There have been a handful of times I've reported one post with a comment along the lines of "Serial one-line zero value spammer - please review post history and delete as appropriate/trash/nuke/ban/whatever", and the post I reported has been deleted but none of the others have been touched. In these cases, I've gone back and reported 20+ posts by the user in question and had them all trashed. It's a minority of cases, but it does happen sometimes.
Once last year, I have seen that mdayonliner reported more than 200 posts per day made by the same spammer and hilarious PM'd him to just report one and leave a comment.
200 a day for one user is ridiculous I agree, but I'm sure I've reported the same user 20+ times in a day. Not because I'm going through their post history but because I'm going through the first page of a board, and if they are spamming in every thread then I'm going to see all their posts.