If you've never heard of Oyster, it is/was an ebook subscription service where you pay a monthly fee for access to as many books as you can read. I shouldn't imply that NONE of my books were listed there. Some are/were... like Sweet Lesbian Love Stories, which has no sexual content.
In a blog post that uses a lot of words to say pretty much nothing, Oyster Books announced they "will be taking steps to sunset the existing Oyster service over the next several months. If you are an Oyster reader you will receive an email personally regarding your account in the next few weeks."
This Publishers Weekly post is more informative: http://www.publishersweekly.com/pw/by-topic/digital/content-and-e-books/article/68130-oyster-is-shutting-down-operations.html
What's left as far as ebook subscription services? Well, there's Amazon's Kindle Unlimited, which is shitty for authors because they demand exclusivity (so we can't sell our books anywhere else) and Scribd, which recently unloaded a bajillion romance books because romance readers read too much.
I've kind of lost track of how many of these "such and such a site is closing down" announcements I've made over the years.
To be honest... I get a little scared...