I purchased a basic deal that consisted of BooksGoSocial sending out Twitter announcements from the day my Kindle edition was published. I liked the wording, the volume of tweets seemed high enough and well spaced, and I believe they prompted a spike in sales. Seeing this activity gave me confidence in this form of promotion and encouraged me to make use of Twitter in a more inventive and consistent way myself. I also found the ongoing advice from BooksGoSocial is realistic, friendly, nicely backed up by their Facebook initiatives, and inspiring overall. I've learned from the experience and, although I haven't seen massive sales yet, it gives me hope and new ideas for the future.