Jupiter's analyst Gary Stein blogs today about ABC and WorldNow which presented the "Local Media Network" (LMN) an ad network that will serve ads on 147 local television websites affiliated to the ABC, generating a traffic of over 20 million people. Basically the idea is to enhance (behavioural) targeting by sharing information about users. The larger the network, the better the ads served. As Gary points out, we are probably entering the new era of ad networks.