On WordPress: it's important to remember it's a starting point for most of those uses. It's what people build entire platforms on when they don't want to/can't afford to start from scratch. People sometimes dismiss the number because "it's all WordPress," but that would be like dismissing Rails or Django. WP isn't exactly like Rails/Django, but it fills the same niche where you can pretty much assemble anything you can think of from pre-made components.
