I came across a very interesting article that talks about India's travelling salemen. The salesman's mission is to promote and sell products to rural consumers. For example Nokia cellphones, Castrol oil for tractors, Unilever soaps, Nestle noodles...

It's a good time to be a traveling salesman in India, relatively speaking. Insulated from the worst of the global recession, India's rural consumers are spending as never before. International brands -- eager for ways to offset contracting markets elsewhere -- are sending out armies of salesmen like Mr. Sharma. Overall advertising spending climbed about 10% in India last year. Rural advertising grew at more than four times that rate.
Mr. Sharma's specialty is rattling off the slogans of the brands that have hired him. Nestl? noodles are "Easy to eat, fun to eat." "Castrol promises 33% more." And, "Did you wash your hands with Lifebuoy today?"
The Infomercial Comes to Life in India's Remotest Villages - WSJ.com