As ebook buyers know, some ebooks are only available on Amazon while others can be found anywhere. This is because Amazon gives certain advantages to writers who make their titles exclusive to Amazon. One of the big advantages is to have the books available on the Kindle Online Lending Library, where writers get paid by page view.
There's also an advantage to going wide--not everyone shops on Amazon. Because of this, I've recently put several more of my titles in all the other venues such as Kobo, the Apple Store, Barnes & Noble, etc. These titles include:
The Trench Raiders series
The Interzone Mystery Series
Warpath into Sonora
A Fine Likeness and its sequel The River of Desperation
Writing Secrets of the World's Most Prolific Authors
The Night the Nazis Came to Dinner
The Rat Killer
The Quintessence of Absence
Tales from the Toxic World
Two series, The Masked Man of Cairo and Toxic World, remain exclusive to Amazon for the foreseeable future. They are quite popular in the Kindle Online Lending Library so I think it's best to keep them there for now.