My favourite site or institution is not only SBI. India Brand Equity Foundation is one site I would like to see as frequently as possible. It is always updated and throws up lots of information on India Inc in various industry lines and sectors with most authentic data.
From the above link, the page speaks about Indian Banking Industry, RBI as regulator as well as development oriented institution for banks in India, as also SBI as a brand. Figures speak for itself. Click and read...I am eagerly waiting for the day when SBI is declared by the GOI as a Maharatna Bank to make the whole world know about the special features.