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- 2012年5月25日 (金) 21:44 (履歴) (差分) N Pay-Per Click' Ad Campaign: Earn Much more by Spending Much less (新しいページ: 'What is "Spend-Per Click"? "Pay-Per Click", is an easy to understand advertising strategy. There are around 300 million searches at major search engines daily. This causes 80% ...') (最新)