On a normal xenForo with the standard content types, nobody cares, but once you have more content types (we have articles, galleryimages & links) it's very confusing.
The standarf search formular in the navbar returns ALL content types.
The what's new link (which sounds global) returns ONLY posts.
The postings tab on the member page returns ALL content types.
So you should change the phrase to something more global OR return all content types.