What a publicist does
A publicist brings the author/books to the attention of the public. Our job is to sell the story of the book and the author. This is done through media campaigns which may include contacting newspapers, radio, television, book reviewers, etc., nationally and internationally, groups and organizations that would find the subject matter relevant. It may also include, for example, obtaining gift bag hand-outs, that is, finding an event during which the organizers agree to sponsor or find sponsorhip (or the author/product developer pays) and hand out a copy of the product to everyone in attendance. They are all sorts of possibilities to achieve attention. It is a matter of research and contacting the right people.
People aren't going to buy the book if they don't know it exists. Publicists do not have control over how many copies are going to be sold - that is up to the public. It may well be that an extensive campaign is launched, the book receives a lot of media attention, but people still don't want to buy it. Same with any other product. You have seen products in the past, whether it be a new type of soda or a new type of sporting equipment that is launched with extensive hype only to be pulled a short while later, because the public did not support it.
I am not going to discuss specific clients as I respect their confidentiality. However, I can tell you that in my own personal case and in general, I researched extensively groups, websites, organizations that would be a fit for the issue that my book was about (landmines). These were the places that I targeted. I achieved media, nationally and internationally, requests for speaking engagements, interest from schools and libraries, and celebrity endorsement.
Maria