The WordPress tab shows that your blog is connected, or is not connected. If a WordPress blog hasn't been connected to the calendar, this is where you would go to connect a blog.
The WordPress tab is also used to refresh a blog's connection. It will also import any posts, authors, or categories that are missing in CoSchedule.
This area also allows you to enable custom post types for your CoSchedule calendar and enable basic HTTP authorization if CoSchedule was unable to connect to your WordPress account.