Adwords is undoubtedly the biggest pay-per-click (PPC) advertising game the world has known. The honor originally belonged to Overture (bought by Yahoo and now called Yahoo Search) but as with the search engine game, Google caught up fast and left everyone in the PPC game choking in its dust.When the news of the success of Adwords advertisers spread like wildfire, hundreds of thousands (million perhaps, only Google knows!) of online advertisers very soon shifted to Adword…

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