I like your popular tags better. Twitter went away from "tell us what your doing" - to a more - "share what is happening anywhere in the world" - I think they and everyone is tired of "Froot loops were great this morning, now in I-40
To that regard, I think this guy's redesign conveys that message better to someone who has no idea what twitter is. People who already have a twitter account will almost never see this page. Thus, it should be focused entirely on acquiring new users.