I tried them on my site and it more than doubled my AdSense revenue. It's not an ad network, it's a new product by Doclix that does in-text related content. They automatically discover keywords and turn them into links (like Kontera) but instead of ads they open up a panel with related content and place my AdSense ads there. Users can navigate inside the panel, which means more ad impressions. CTR is very high inside the panel. CPCs are much higher than Kontera, adbrite etc because it's AdSense. Check them out on www.doclix.com.
I tryed Google adSense for advertising my website, but I was not very happy with the results I got. I also tried email advertising on different networks and it seemed to me that taketheinternetback.com ads results were a little bit better in terms of generated visits and conversion.
Hi Hotdesign, I signed up with ContextGain and find it to be really useful and actually provides pertinent articles to whats on my page. In answer to your question about payment methods, Doclix does not pay me. When I signed up for CG I input my Adsense pub Id and CG uses that on my behalf so I'm getting my money directly from Adsense. Makes life a whole lot simpler. All the best.