Content of Google Adsense

1. Adsense for content.
This type is the usual type. This is what most people use. Shaped in the form of advertising that we would get a dollar if a user clicks on these ads with other words that PPC (Paid Per Click). But sometimes we can get a dollar every 1000 impressions / perform (Paid Per Impression), but for that it seems only to certain advertisements and opened in certain countries.

2. Adsense for search.
Which is shaped in the form of "search engine". We only get paid when someone searches through the search engine that we put on the web / blog and then the person clicks on one of the search results in the form of advertising, so not all of the search results in the form of paid advertising. Usually a given box and there was his "Ads by google"

3. Referrals.
Adsense Referrals exactly the same form with the type "for content", ie only the difference of a dollar acquisition system. this type, we will get paid if there is a subscription / download / buy / use the product from the ad.