bìng dú yíng xiāo / bù yí dìng / yào / tóu rù / hěn duō / guǎng gào fèi / guān jiàn / shì / nèi róng / zú gòu / yǒu / fēn xiǎng / jià zhí

病毒营销不一定要投入很多广告费，关键是内容足够有分享价值。

Viral marketing does not necessarily require a large advertising budget; what matters is that the content is worth sharing.