Can't agree more. The thing I miss when going to the home page of a blog or QA site is finding well organized content by topic. Something manually curated by the owner(s). Content by tags does such a lousy job because it's the lowest level. Unless you only use 5-10 tags people aren't going to find interesting content on their own unless they come in off search for a specific query. Though, as someone mentioned, showing related articles would help this visitor.