Check these Sites:
Google Adsense (CPC/CPM)
Run by Google, what else is there to say?
Best CPC (Cost Per Click) AD network
This is the best CPC network around. The pay rate per click depends on your niche.
This is going to on the top of advertising network within next few years.
Their CPM rate is higher than any other network i.e. starts at $3.0 per 1000 to $10 per 1000 impressions
Requires at least 60,000 visitors per month.
They manually approve the publisher
USA/Canada based publishers are welcome and get easily approval if you have get 50,000 unique visitor every month.
Your site must get at least 150,000 Impressions monthly in order to be accepted.
They Prefer Tech & Gaming Websites.
High rates (Avegare around $0.75-$2.00 per 1,000 Impressions)
If you use Welcome pages using the tools they provide you might see CPM’s as high as $30.00 per 1,000 Impressions.
Not a very easy to get it Network
Very good rates
Net 60 Payments
Requires at least 75,000 to 100,000 unique visitors per month and 750,000 to 1 million page views per month, as well as at least 1-2 above the fold standard IAB ad placements.
Started testing them recently, so far ADS are good quality.
They count USA and International traffic.
Option to set up fallback tags in case they don’t have ads to show then your backup ads will show so you aren’t losing any money.
The amount of ADS they show depends on your fill rate. Once again this depends on your traffic quality,etc. Similar to CONTEXTWEB.COM (PULSEPOINT).
Very good rates
A minimum of 500,000 unique users per month
Probably the hardest network online to get into
Click HERE to view their full requirements
Hope, This is helpful!