Integrate Twitter and Facebook into your Gmail and start using them straightaway. This gives a common window for your Gmail ,Facebook and Twitter (and yes, Google Buzz also).
You can use the third-party gadgets written for Google to achieve this.This helps you to make Gmail a common application where you could access Twitter, Facebook and Buzz straight from Gmail.
Before adding any Gadgets to Gmail you need to activate “Add any gadget by URL” in Gmail Labs.
Step By Step: Integrating Facebook and Twitter Into Gmail
Integrating Twitter with Gmail
- This is a simple three step process
Go to Gmail Settings –> Gadgets - Copy the xml form TwitterGadget by LOGIKA Corporation. See the Gadget URL below
http://www.twittergadget.com/gadget_gmail.xml - Add a gadget by its URL in the provided text box and click on Add. Done.
Integrating Facebook with Gmail
- This is the same process as above
Go to Gmail Settings –> Gadgets - Copy the Facebook Gadget URL http://hosting.gmodules.com/ig/gadgets/file/104971404861070329537/facebook.xml
- Add a gadget by its URL in the provided text box and click on Add. Done.
Binu George , the author of Globinch.com, is a technology blogger from India and a software solution architect by profession. 
This is cool. Thanks for sharing the Facebook and Twitter integration with Gmail…
Indeed this is cool! never even once considered linking social media programs with Gmail. but it makes a lot of sense with Buzz and the other features that you can build upon.