Creating a Super [Vertical] Blog from Other Blogs--Something Like This

WordPress.com, a supplier of free blog space much like Blogger, created a "vertical - a site called FoodPress in which it aggregates content written by its food bloggers [, meaning bloggers who use WordPress].  Each day, FoodPress will feature snippets of food-related posts." That is the report from MarketingVox. Why would WordsPress want a blog about what's already blogged? Convenience for the reader, much as this site aggregates content from Websites and blogs. With the greater diversity of content and the more selective the content, WordPress.com hopes to generate readers, which will attract advertisers.