Self Publish through Apple iBookstore

I saw this article today that Apple will begin allowing authors to sell their books directly through the Apple iBookstore. With the interest in iPads this may be of interest to many with narrow niche books to sell. Of course there are all the normal Apple requirements and then there is the whole issue of marketing and how will folks know about your book. Details, details, details. If you have an Intel based Mac computer it still may be worth looking into.