Here's what some company claiming to have 200k readers on social media has emailed to say it will do for my book:
Daily 1 post on our Facebook page about your book with image, caption, and tags.
Daily 1 story on our Facebook page about your book with image, caption, and tags.
Daily 1 post on our Instagram page about your book with image, caption, and tags.
Daily 1 story on our Instagram page about your book with image, caption, and tags.
Daily 10 tweets on our twitter profile about your book with image, caption, and tags.
Daily create eye-catching graphic images of your book for Facebook & Instagram.
Get a social media promotion report after the book promotion is over.
Get the tweet list of your book with the promotion report for your future use.
Get the graphic images of your book with the promotion report for future use.
The price is $30 per day.
Uh, no thanks. I've never heard that those tactics worked, ever. (I'll post the link if for some reason you are interested.)