You can report posts which you think need some moderation on the forum. The button for that is labeled "Flag as offensive" which sounds a bit harsh. It might not be offensive, maybe you just want to point out that the post would fit better in another category or something. Why not change to "Report post" or something friendlier?

Next when you do report a post you have to choose the reason from a dropdown menu where the only option is "spam". A few more options there or making a selection not required would be good.