I will tweet your about your book and/or promotion to my 8900+ followers via @theseriousreadr. This is great for sales, new releases, or special promotions. I send out 12 tweets in 24 hours. (I spread them out at random to better reach all followers and audiences.)
Note: I often get a lot of RT's.
Tweet about your book promotion 12x
I will tweet about your book or promotion 12 x in 24 hours