The data should be reviewed monthly, and any user who was not active in the past 90 days should be locked out of the system--a policy that helps prevent unused accounts from being accessible.

应该每月回顾数据，并应该在系统中锁定任何在过去 90 天里不活动的用户 —— 一个帮助保护未用的帐户不被访问的策略。

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One yardstick that continues to reflect Facebook's meteoric rise is its monthly active user base, which totaled 901 million as of last month, up 33% from 680 million a year earlier.

WSJ: Facebook's Growth Slows

And now, with changes to the social landscape occurring at lightspeed, JESS3 presents its third iteration of The Geosocial Universe, charting the latest monthly active user data for various social networks, along with the percentage of users who access each network via mobile devices.

FORBES: The Geosocial Universe 3.0 [INFOGRAPHIC]

In much of North America and Europe, Facebook's monthly active-user growth has slowed of late.

WSJ: HEARD ON THE STREET: Facebook Tracks Ascent of Google