From Publisher’s Weekly
Togather.com is free for authors and starts August 6 with an authors-only portal for writers to sign up and receive an account. The account will allow them to set up events on a custom author event page that can be circulated through social media sites like Twitter and Facebook. “The event page allows authors to ‘fansource,’ ” Kessler said, “set up a tour, schedule events, tweak the details, and solicit support for the event before the author arrives.”
Laura Stack’s new book came out today and while she is already established as an author, she know the market and pulled out all the stops to have a fabulous launch day.
But
n almost every field, there are people who are extremely good at getting publicity. 
You have seen the emails from our partners in these promotions. We regularly put together teams of authors, online entrepreneurs, newsletters and bloggers to launch a new book. The details vary, we add virtual book tours and media appearances and social media marketing to the mix, but the basic principle in a cross promotion is the same. We create buzz of all the partners, and grow together as we launch each best seller book to the market.