Bug in Orkut !! Can be use to get a email address
EVEN IF he/she is not publishing it from profile
Follow simple steps to do that
1) Ignore the person by clicking on ‘ignore user’ on the left menu
2) Link Gtalk to your orkut account if you haven’t done it already.
3) Opne the Blocked section in your Gtalk’s Settings
4) You will find email address there.