Take the following as truth: 24/Seven pulls together the Slate features that are updated repeatedly throughout the  Our daily Diary; the e-mail give-and-take of The Breakfast Table and The Book Club and Dialogues about the pressing issues of the day; e-mail dispatches from hither and yon; as well as our Moneybox meditations on business, Chatterbox commentaries on politics, and Culturebox on ...
Then the following statement: "Slate features are only available to premium subscribers of Slate." is true, false, or inconclusive?