Just A Thought

I was thinking about reviewing ebook and audiobook websites, such as audible (which I am a member of and love, no i do not get a kickback for promoting), playster, and scribd. Has anyone out there tried any of the others outside of audible? Are there any sites/apps I did not mention If so I would like to check into them as well. I will also include links to all sites, if this is something I push forward with.......Well lovelies have a wonderful rest of your day