At the top left is a link labelled “All Items” followed by the number of unread posts you have. It’s right under the “Home” link. Click it. Then click the “Mark all as read” button at the center of the page. Click OK when your browser prompts you if you really want to do this. Ta-da! You’re up to date.
Of course, you should only doing it after reading all the posts on The Cart Blog. 
