1. An easy software solution for multivariate testing web pages. 2. A bid management tool for PPC. I'm thinking something like www.efrontier.com, but for small and medium sized businesses. 3. Totally different from the top two, but I'm interested in a personalized (or well-balanced) news site. Findory would be the best comparison. Of course, it failed, so I am a little bit hesitant and I think relying on advertising as your only revenue source is very risky. If you're interested in the latest technology that could be used in this area, check out http://www.cs.utoronto.ca/~hinton/absps/sh.pdf
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