Google Apps not just for SMEs?

The relentless positioning of Google Apps as an alternative to MS Office continues.  Google has just announced the acquisition of Postini an on-demand hosted provider of secure communications (EMail and IM) for large corporate clients.  The use of hosted email and document storage solution is a no-brainer for small  businesses but compliance and data security worries hold back large companies from taking advantage of the cost benefits of  Google Apps (although some large institutions like Trinity College Dublin have made the leap).   I guess when Google incorporates Postini technology we’ll see a third Apps edition added to the existing standard and premium options, this time targeting the needs of large enterprises.