What's the advantage of Google Chrome's strange setup strategy? [duplicate]

This question already has answers here: Closed 12 years ago.

Possible Duplicate:

What are the advantages of installing programs in AppData like Google Chrome?

It will install itself somewhere in %HOMEPATH%. Why not in %PROG开发者_Go百科RAMFILES%?

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I've always assumed this is to avoid forcing the user to have administrative privileges.

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I guess the most important reason is roaming. So if you logon to another computer in the same domain, you can have it there too (although roaming is not enabled in every domain).