Apparently they're selling the contact information of celebrities, investors, developers, politicians, etc.
"At Black Book we provide contact information to world class artists. Upon purchase you will receive a file with the required information to be able to contact the artist."
"The information usually includes email and phone numbers to the artist's talent agent, publicist, legal representative, etc."
http://www.businessinsider.com/cynk-technology-2014-7
http://www.zerohedge.com/news/2014-07-09/full-list-companies...
Formerly "Introbuzz", also associated with "Sanchez Medical Services"
http://www.nasdaq.com/markets/ipos/filing.ashx?filingid=8174...
http://www.sec.gov/Archives/edgar/data/1540160/0001165527130...
http://www.zerohedge.com/news/2014-07-09/sheer-insanity-no-r...
Marlon Luis Sanchez and Kenneth Carter seem to be the two primary executives of the company.