Plz tell me whether i need to have min number of impressions for fastclick or other affiliates? or for any other Pay per impressions based sites? and also plz tell me Which one will pay highest
The ones that pay the highest you have no chance of getting into so there's no point in bothering with them ones. If I were you I would try and get into the smaller lower paying ones and then work upto the better paying ones. The reason I say you will have no chance of getting in is because all of them or most of them need a minimum amount of impressions before they accept you and then it's not just about the impressions, but is also about the quality of your site, the niche, etc.