What are the best advertising sites?

There are lots of many new advertising sites every day, because of the competition and the enormous amount of blogger coming out to the online world for earning money ever day. So apart from the new biers, the old legends of this category are smorty, pay per post, sponsored reviews, loud launch, blogsvertise. These are said to be the best and legends of this category, so when you start a blog and need to earn money through it, start with these sites first.