An interesting and funny thread at WebmasterWorld named AdSense Referrals. Are we all insane?; Why create your own competition? This thread discusses the cannibalization process of AdSense publishers using the new AdSense Referral Program to make money, but in reality, all they are doing is making more competition for themselves.
The reasoning for the argument, is that the ad itself is not contextually relevant to the readers. Since AdSense publishers are into contextual relevant ads, and money, why show non-contextually relevant ads? Well, that is up to the publisher. If I, as an AdSense publisher feel that my readers are interested in signing up as an AdSense publisher, then I will show them an ad for it. Should I worry that they will compete in my niche? If you are paranoid, you can worry. Anyone willing to compete, can sign up themselves without your banner ad. Overall, you need to make the decision for yourself. Do you feel comfortable bringing in more publishers or not?
Point to remember IMHO: this is *not* a zero-sum game, ie someone else's gain is not necessarily (y)our loss.
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