Google Spreadsheets

Google have just released Google Spreadsheets for a limited number of beta testers. While Microsoft is moving into search and online ads market, Google is stepping into office application. Become another battle Microsoft vs. Google. Spreadsheets application on the web means that user can use Excel-like application anywhere without having to install the program, and it's FREE. The greater benefits of web spreadsheets application is information on demand and sharing. With web application, users could access their information anywhere and could also allow their co-workers or customers to access their information. Check it out at http://spreadsheets.google.com/

The question is how fast Google could develop all those formulas and features provided in Excel. and I don't think that Microsoft is sitting there doing nothing. I think that Microsoft also have plan to bring Office application to its live suite.

What's next from Google? web operating system?