Earn money blogging with PPC advertising

This is perhaps the most popular way to monetize a blog. Everyone knows about Google Adsense which falls in this category. PPC stands for Pay per click and here's how it works. You register with the network which runs the ads (like Adsense) and insert some code on your blog to display those ads. The PPC network then provides ads relevant to the content of your blog and you get paid every time someone clicks on an ad. The main requirement to gain success in earning decent sum with PPC is traffic. The more traffic you get the better. But its best if you get targeted traffic. The two important factors which dictates the PPC profitability is the CTR and CPC. CTR stands for Click through rate, which depends on the design of the site. CPC is cost per click which depends on the niche of the blog. Some niches like finance pay more than others like technology related niches. The mostly used CPC advertising networks are :-

Google Adsense
http://www.google.com/adsense
YPN (Yahoo! Publisher Network)
http://publisher.yahoo.com/
BidVertiser
http://www.bidvertiser.com/
Chitika
http://chitika.com/