I don't see what the benefit is. I do see a drawback, which is that it insists on showing me what's trending right now. Barring a very small number of major news events, I would much rather <i>not</i> see that. Suppose I'm watching some opera or a tech talk or searching for some new music, why would I want to be bothered by by a list of what's currently obsessing the Twitterverse?