因特网目录服务供应商 internet directory provider ; IDP
信息所有者有中等开销；目录供应商开销较大。
Moderate overhead for the information owner; high overhead for the directory provider.
这些额外的成本并不一定会对信息所有者造成直接影响，这取决于目录供应商所采用的商业模型。
Depending upon the business model adopted by the directory provider, these additional costs may or may not directly impact the owner of the information.
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