Update
Please navigate to this post for the working trick for this hack
Note
Hack listed below does not work anymore. Orkut has changed the design of friends page. Please see this post for working version of this hack 
This hack will allow you to find email address of any orkut member even if he or she has not mentioned it in his or her profile respectively.
» Instructions
- Open the profile of the Orkut member, whose e-mail address you want to know.
- Click on ignore user option as shown in screen shot below.
- Now open your Gtalk messenger.
- Sign in and click on settings.
- Choose blocked tab.
- There you go – The e-mail address of the blocked Orkut member
» Credits
This Hack was discovered by Mithanshu
» Notes and Updates
This hack is not working anymore. Please browse other working tricks and hacks till we find a workaround for this hack.
It’s not working buddy….. :’(
Not Working [:p]
hi, i would like to know how to hack password?
hi Friend’s its not working ….find another tricks…..
Hi Buddy its not working find other trick…..
not working
not working trick… please give other one
Hello fren its ultimately urgent plz post me the latest update reguarding it
it works with some users only,please inform me when any other solution is available