A lot of publications are adding iPads and other portable devices to their distribution chains. As a result, we're beginning to see some solutions for small- and medium-sized companies that are starting to approach the idea of offering a self-publishing solution. You can always send people a PDF, but that's really not a magazine, and it won't show up in the App Store.
One interesting product is from some former Apple employees who have started MagAppZine. You submit a PDF, and the company quickly converts it to a magazine and submits it to the App Store for you. You can see some customer examples in the App Store here.
