Roll Your Own Advertising

Instead of relying on AdSense to guess which ads will be effective to run with your content, ecommerce CafePress lets you use tags to identify the types of ads you want.

This does give publishers more freedom, but it requires more work as you have to manually update your tags when you publish new content, according to Adotas.

I can imagine that there will be lots of competition for the ads with recognized ROI (porn? movie rentals?). It's an interesting idea, but automating the process by enabling publishers to check off the types of ads to run across their site would be much more efficient. Playing tag was more fun when I was seven.