Doubleclick's DFA
Hari, Thanks for your comment.As you asked let me tell few informations about Doubleclicks DFA.
Primarily DFA, is an Advertiser's Ad Serving tool.That is Advertiser"X" would advertiser their ad across multiple websites.So as to streamline their online campaigns, they must colate all publisher's(Web Site)report and further Campaign management becomes critical.
So with the tools like DFA, the advertisers would generate HTML tags, which can be sent across to all the planned publishers for campaigning. As a result of this creative management, optimization even targetting can be done at advertiser end instead relying on the publisher.
Hari we also have lots of other tools like this in the market
For more information on DFA please visit "http://www.doubleclick.com/us/products/dfa/"
-Raja Ramachandran