[請益] 一段文章

[Matique ()]

For Yammer, “viral” adoption has been the key to its success. People can
set up their own networks easily, even without the IT department’s blessing.
Its basic service is free. Payment is due only from groups that want more file
storage or support. With luck, popularity will speak for itself and members
will be generating a lot of useful material. Around 15-20% of free users end
up being paid for.

vrial adoption 這個詞用中文形容不知道怎麼說比較貼切

然後speak for itself有查到是不言自喻的意思 但是跟上下文串不起來

原文出處:http://www.economist.com/node/21557341

感謝回覆

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◆ From: 114.39.100.191
→ thom7722:viral means spreading exponentially through a network
→ thom7722:'popularity will speak for itself' means that it due
→ thom7722: to so many ppl using it; it will become even more
→ thom7722: popular w/o any kind of promotion or advertising
→ Matique:謝謝