Look around you: Ice cream parlors and cookie stores offer free tastes; fashion brands are desperate to give away prizes via radio contests; luxury brands organize golf tournaments; and publishers organize their celebrity writers to speak at public events.
But you’re already aware of the reasons behind this phenomenon.....
http://blogs.wsj.com/indiarealtime/2010/04/21/india-journal-the-case-for-enlightened-self-interest/