在軟體使用強調自由與開放性的趨勢下，開放原始碼軟體（Open Source Software, OSS）逐漸成為資訊軟體業的熱門話題，也成為一股不容小覷的新勢力。相較於一般的專屬軟體，OSS是以社群協同開發為後盾，並透過不同的訊息傳遞管道，將社群的集體智慧發揮至極致。
本研究欲以OSS社群互動為出發點，透過社會網絡分析（Social Network Analysis, SNA）的方法探索成員於網路中的互動行為，歸納出三項結構性指標—仿代言人效應（Quasi-Spokesperson’s Effect）、網路效應（Network Effect）與電子口耳相傳（Electronic Word-of-Mouth, eWOM）。希冀經由統計分析方法，衡量其是否如實體商品的環境一樣，對OSS下載數量產生影響。
研究結果發現，仿代言人效應對OSS下載數量具有顯著影響；網路效應對OSS下載數量的影響未能達到顯著水準；電子口耳相傳對OSS下載數量有顯著地影響。

In regard to the use of the software, the “Free” and “Open” trend have been emphasized by the public. In addition, Open Source Software has gradually become the popular topics and the new force in the information industry. Compared with the proprietary software, the OSS’ development has been established in coordination with the communities. Furthermore, communities’ ideas can be utilized efficiently via various information channels.
The aim of this study is to take the interaction of OSS’ communities as the starting point. Therefore, in order to adopt the method of Social Network Analysis to explore members’ behavior in the network, three constructive dimensions have been generalized — Quasi-Spokesperson’s Effect, Network Effect and Electronic Word-of-Mouth, which could be introduced into the measurement of the effect upon OSS’ download quantities through the statistic method, determining whether the OSS’ scenario is similar to the commodities’ or not.
The findings show that OSS’ download quantities is influenced obviously by Quasi-Spokesperson’s Effect; OSS’ download quantities is not influenced by Network Effect obviously; OSS’ download quantities is influenced by Electronic Word-of-Mouth obviously.

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