Still, that seems like it would be a pretty killer social layer…

当然，这看来还是很牛的一个社交层。

youdao

Adding a social layer is one of Taobao's key objectives for 2011.

社交层面的增加将是淘宝2011年主要目标之一。

youdao

After email, SMS and iOS messaging, Twitter will now become a key social layer over the top of many of the apps on iOS devices.

继邮件，短信和iOS消息之后，Twitter将在iOS设备里成为核心应用的关键的社交功能。

youdao

So why would they, and their users, need Facebook to add a social layer atop it?

FORBES: Why On Earth Would Anyone Want a Facebook Phone?

Adding a social layer on an existing application or rebadging existing software is the flavor of the moment.

FORBES: Social At Work: Facebook's Lessons For The Enterprise

Startup Piazza, a free student question and answer service, is providing the social layer for the test case.

FORBES: Move up http://i.forbesimg.com t Move down