Article at
http://www.pcworld.com/businesscenter/article/181575/postini_technology_to_spread_across_google_apps.html

"The Postini technology that lets Google Apps Premier administrators control their e-mail environments by establishing and enforcing usage policies, rules and parameters will be extended to the other applications of the suite.

That way, Apps Premier administrators will gain tighter control over how employees use not only Gmail but also the other suite components, like the word processing, spreadsheet and presentation applications.

When completed, this extension of the Postini security and management capabilities could go a long way toward calming concerns from CIOs and IT managers about using Web-hosted software like Google Apps.
...."