Suitability:
UNAVAILABLE
Mint can only be used in USA. Mint.com support advised:
Non US-based account can’t be added due to currency conversion.
Currently Mint only supports US based financial institutions. We do plan to support financial institutions based outside of the US and we will attempt to notify you via email when we do. We would also recommend keeping an eye on our forums at http://forums.mint.com/ for regular product updates and announcements.
Intuit has blogged plans to go online with a Quicken-branded version of Mint, later in 2010: http://blog.quicken.intuit.com/announcement/2009/12/02/quicken-online-mint–com-the-best-of-both/
Platform
Online, through Firefox. There is an iphone app that gives read-only access to your Mint. The back end is reportedly provided by Yodlee.
As a security measure, Mint only allows read-only access to bank accounts. You cannot use it to move money.
References
Personal correspondence
http://blog.quicken.intuit.com/announcement/2009/12/02/quicken-online-mint–com-the-best-of-both/
http://getsatisfaction.com/mint/topics/can_mint_be_used_outside_of_the_u_s
http://www.mint.com/features/