Web Masters are very much interested to use CPM Ad Networks, Those have high traffic blogs/sites.
You can find lot of CPM Ad networks Like Value Click, CPX Interactive, Tribal Fusion etc. In these tribal Fusion is high rated. but getting an account at Tribal fusion is not easy. they are very strict to approve publishers.
Technorati Media is a Good alternative for Tribal Fusion. For me getting an ecpm of .30 (May be it due to, My main sites are Entertainers).
Technorati Media’s Payment Threshold is 60 days, Technorati Media Minimum payment amount is $50.00 and Pay Via PayPal or Check.
Technorathi Media Ad Formats : 160×600, 468×60, 300×250, (300×250,300×600) and 728×90. Once i got a mail from them that they soon starting bigger ad units, are you interested in it ?. No replies yet .
Once your Application accepted they send the Ad code to you. Technorati Media is using Right Media Platform.
The Main Disadvantage of Technorati Media, I have seen is their Customer Care is not good. you will not get replies on time. (In my experience).
Apply to Technorati Media
Update on Technorati Media Customer Care : Send your queries to publishers[at]technorati[dot]com , you will get the answers.
Technorati Media Payment Proof