Half these headlines end in a question mark, which is a fair signal of what the blog does: it takes a query somebody might type and answers it at length. Mobile gets the most attention, with SMS campaigns, keeping customers loyal on a phone, and the mistakes people make when they treat a mobile message like an email.
Peter Sales is at his most useful on brevity. His argument about mobile is that attention on a phone is borrowed and short, so a message has to land before the thumb moves, and that principle organises everything else he says about the channel.
Email, search, video and network marketing fill the rest in the same instructional voice, broken up by short tips that interrupt each paragraph.
A back pain category sits among the marketing ones without explanation, which is the only surprise on offer.
Search for the channel you are attempting, read one post, and do not expect an argument about whether that channel deserves you.