This paper examines the effect of Internet penetration on competition and prices in the market for Yellow Pages advertising. We find that the diffusion of the Internet is associated with a decrease in the number of competitors and average prices for printed advertisements in the long-run. However, the decrease in prices is attenuated both by increasing market concentration as firms exit and by geographic rescoping as remaining firms reposition their products.

中文翻译：

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黄页广告中的互联网使用，竞争和地域限制

本文研究了互联网渗透对黄页广告市场竞争和价格的影响。我们发现，从长远来看，互联网的普及与竞争者数量的减少和印刷广告的平均价格下降有关。但是，价格的下降既可以通过企业退出时市场集中度的提高，也可以通过剩余企业重新定位产品时的地域范围的缩小来减弱。