GoodReadsBub?

I occasionally blog about book promotion, especially in reference to free books, but also about how hard it is to get a book in front of folks who might want to read it.  One service I've mentioned often is BookBub, the gold standard of email promotion for ebooks, They have a website, but their marketing power comes form their massive email subscriber list. None of the other services compare in scope, and for this reason, BookBub is now extremely popular with traditional publishers who are running sales of ebooks. It's difficult for self published authors to get a slot in the BookBub list.

Now, the mighty BookBub might be getting some real competition. Today I got an email from GoodReads, the popular reader-centric site, which was bought by Amazon a few years ago. It looks like GoodReads will be offering a daily email of books for sale.

Once I logged on to try it, I was able to choose specific authors as well as genres, and also specify my preferred ebook platforms (Kindle, Nook, iBooks, etc), so they are not just offering Kindle deals.

What I don't know is, how does GoodReads know about these deals? Are they getting paid by someone to list the books, or do they just scour the web looking? Certainly they will money on every Kindle books sold, but what about non-Kindle deals?  Or maybe they figure if they can cut into BookBub's business, they won't have to pay associate fees to sell the books. 

One feature GoodReads has always offered is a "want to read" list. You can tag a book as "want to read," and now GoodReads will tell you when it's on sale.  Likewise, they can tell you if an author you follow has a promotion running. 

I wonder if GoodReads will expand this service to cover print books. While ordering a print book online night not have the immediacy of getting an ebook download, if you rely on online ordering for your print book needs, knowing about special offers, and price reductions could still be a great thing for you. But then Amazon probably already does that directly, based on your buying history.