Adsense programme is run by google which is no 1 search engine.This is one of popular method to earn money for internet user.In adsense you have to make your site on any topic and make it popular.Google will put their ad on your ADSENSE site.When someone visit you site click on ads your google adsense account will be credited.A crore of internet user are earning a good income. To know more visit :- http://adsenseguideforu.blogspot.com
It's very easy to earn online