在线使用信用卡这个功能已经很成熟了，已经集成在许多产品中，但是我们目前采用这个模式并考虑它会导致哪些变化和扩展。
The usage of online credit cards is well-understood and the function is integrated into many products, but include this pattern for now and see what changes or additions it leads to.
还有一种新方法是 代码契约，但目前该技术还不成熟，没有形成产品。
There is hope here with Code Contracts, but that technology is still far from being production ready.
但是围绕开源建立一门成功的生意是困难的，到目前为止我们见到的商业成功都出现在非常成熟的产品类别，甚至已经是达到日用品的程度的。
But building a successful business around it is tough, and so far we've only seen clear-cut examples of commercial success in areas where the product category is mature, even commoditized.
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