Best ad revenue for your site or blogs

You can used this ad revenue in your site or blogs so you can earn something from it. Monetizing your site will surely help your earn additional incomes and even students could learn to earn on there owns using this methods

AdSense: http://www.google.com/adsense

High CPM and CPC
Contextual Ads
$100 Minimum Payment
Check and Bank Wire
*Approval needed, very strict TOS

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Clicksor: 

Low CPM and CPC
Contextual Ads (poor)
$20 Minimum Payment ($50 for check)
PayPal and Check
*Approval needed, traffic must be at least 50% from US, Canada and the UK

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Chitika:

No CPM or CPC knowledge
Contextual Ads
$50 Minimum Payment
PayPal and Check
*Approval needed

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Bidvertiser:

No CPM or CPC knowledge
$10 Minimum Payment ($50 for check)
PayPal and Check
*Approval needed, very strict TOS

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AdEngage:

Sell ads on your site
You get 75% of the ad revenue (Unknown minimum payment)
PayPal and Check

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Yahoo Publisher Network:

Contextual Ads
Standart CPC and CPM
Unknown Payment Methods
*Beta Program