但是，在这两年半不收费的时间里，我们意识到我们无法让这种免费的模式运作下去。
But, after two-and-a-half years of providing it without charge, we realized that we could not make the free model work.
真正的免费商业模式——为产品提供免费版本和收费版本。
True Freemium -give a version of the product for free and charge a fee for the other versions. There are two ways to go about this.
媒体世界已经从广告支持的免费内容向免费增值模式转变：用免费的样本为付费服务做营销，重点在于附加收费部分。
In the media world, this has taken the form of a shift from ad-supported free content to freemium - free samples as marketing for paid services - with an emphasis on the "premium" part.
应用推荐