Airtel Free GPRS using twitter and realhost

Steps
1. Download Ucweb OR opera handler from here .
http://trickess.blogspot.com/p/handler-apps.html
You can also try other appswhich support Real host proxy.
2. Install Ucweb handler and open it. You'll see handler settings page.
3. Scroll down to proxy section and select HTTP or Real Host

4. In proxy server write 
m.twitter.com
5. Save these settings and ucweb finish initialization.
6.Real Host tricks works with Default MO settings.
But, if u select Http then u must use corresponding manual settings.
Example in Opera Handler:
use settings,
Apn : airtelgprs.com
Proxy : server4.operamini.com
Port : 80
Note : Twitter is Free in Airtel upto March 2012 only.
For details, www.airtel.in/twitter
7. Now browse your favorite sites. I think downloading is also possible. It's a bit slow but I've personally confirmed this. Try it and reply. :)