This is a great website I have come accross recently.Texas-based technology-enabled business value services provider, Trilogy, has developed a portal YourBillBuddy.com. Its currently in Beta and free for use. If you are an Airtel subscriber like me, or have an ebill available from your operator head straight to YourBillBuddy.com and upload the same. Even if your Ebill pdf is password protected , the service is smart enough to validate the same.
Once you upload the bill, within seconds the site analyses your bill and gives you a break up of your usage viz. Local Voice,STD Voice , SMS, Data and Roaming
The Current Networks supported are : Airtel , Reliance, Hutch, Spice, Bsnl and Tata Indicom
The service is certainly a laudable one.