Digg is using Microsoft Adcenter
I found a recent changes of Digg advertising. They have moved to Microsoft Adcenter publishing network. Earlier they are using the Google Adsense code on their site.
Is Google Adsense loosing popularity ?
Google Adsense was the first to introduce earning opportunity for the webmasters of the site. In the beginning people were enjoying using Google Adsense. Moving of Digg towards Adcenter indicates better opportunity for webmasters. Well I don’t think so, more competition better opportunities. Well I am not using Adcenter on my site. But will try it . If it is providing better share of revenue to publishers.
Every company wants to increase their profitability. Once the company enjoys the top advantage of the market. They may change their strategy to maximize their profit.
Before when I started my Google Adsense, I was getting paid much better than now. I think we should keep looking for better opportunities and response accordingly.

Microsoft Adcenter will be a boon for webmasters. Hope their publisher program for all countries come soon. Google Adsense sucks and is loosing popularity. They are really monopolistic and do not provide enough details to webmasters. If a webmaster earns 5 cents of a click, Google is earning 25 cents as heard from a Google insider. They are ripping webmasters and pocketing the whole money. Hope Microsoft and Yahoo will offer better rates to webmasters.