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BeauCreative - 6:04 am on Mar 15, 2005 (gmt 0)
As skibum said, advertisers will still pay the same CPC on google and will expand their campaigns to the other companies if it is worth it... google should not be effected much on the advertiser end. The only issue would be choosing which network to put on your sites exlclusively... but that competition will only benefit the publishers because the ad companies want to provide as many clicks (supply) to advertisers as possible. The only reason you should experience lower CPC as a publisher would be because the newer networks will not be as saturated as google and therefor will not have as many people competing for the keywords. This is an advantage to the advertisers and a hurdle for the networks... but I dont see the disadvantage to publishers who stick with google and use the other networks to fill PSAs until they catch up to google.
I dont think it will necessarily dilute the market... this isnt a case where there is a limited demand for clicks. Most advertisers (including myself) want as many clicks as possible.