I got this from a thread I picked up on ValueClick's Q2 2006 earnings conference call transcript from August 1st, 2006.
Let me speak to link management, this is in reference to commission junction. What we have started to do is try and get our publishers to move their tags over to their JavaScript, because we believe that over time that it is going to be demanded more and more on the advertiser side. We are not mandating it, however, and it could take a considerable amount of time to do such a migration.
We got a response loud and clear from our publisher that they are not willing to do this on a wholesale basis, but we believe that over time, maybe it takes a year or two, that this will be the way that the market will go. So we are going to be patient with it. Right now, we are just working with our publisher on a one-to-one basis, and eventually I would anticipate that we will get there over time.
The entire transcript is here
http://internet.seekingalpha.com/article/14792