AdSense, Tagvertising or Pixel Ads?
I don't think commercial tag clouds will work. I'm not even sure that pixel ads will survive in the long run. In the short run, however, they're working for 2 reasons: they're visually interesting (or distracting but they draw your attention) and their cost is small and fixed. A PPC (pay per click) tag cloud won't fly. Advertisers don't even trust Google and Yahoo! to solve the clickfraud problem. A startup trying to commercialize tags isn't going to engender confidence. If tag clouds were sold on a fixed cost basis, that might work. If I were marketing ZoomTags, I'd start out with a trivial fee to attract advertisers and would increase fees based on demand. For example, maybe I'd charge $10/month during a beta period. Those fees could grow once a large pool of advertisers and publishers had signed up. I suspect advertisers looking for new ways to advertise online might test such a program. Not a new PPC platform though. Besides, Yahoo! already offers tagvertising, albeit not explicitly.
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