We once paid a lot of money on banner advertising on autos and taxis in Delhi. We did not go throgh the formal way and just gave some gifts to the auto owners to display our banner at the back of their autos for a month. Every auto owner wanted the gift from us and put up our banner. Next day all the banners were gone. They were most probably expecting some ther company to give them a similar deal now. It was a disastrous advertising campaign on our end.