According to an email received, ICICI bank is set to usher in banking via Facebook in the year 2012. It is not exactly clear what or how they intend to do it. But for starters they are planning to include a page of their own for you to like on Facebook.
Here is an except of the plan:
As we step into 2012, we re-affirm our commitment to continue offering you superior banking services in line with our philosophy of ‘Khayaal Aapka’. We are pleased to inform you that ICICI Bank will soon be present on Facebook. The ICICI Bank page will include a one-of-its kind ‘Your Bank Account’ app through which you can access your bank account information while on Facebook. You can also choose to ‘Like’ our page and get updates on exclusive offers.
It is only known at this point that they will provide an app which will let you interact with the bank backend. But given the number of security loopholes in Facebook or any other social application/website so far, this in my opinion is only a recipe for minor disasters on average users who are already being lured by useless offers and mails.