The problem, as I see it, is not the syntax of calling out "Newsfilter!" in a news-related post, it's that it was called out in every post that could possibly be considered a news post -- i.e., it was overused and abused in a way that missed the entire point of the original complaint that there were too many news posts.
家用摄像头网上专卖店满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满意意满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满满意意了我是我是我是我是我是我是我是非常满意！。