I did! :) it's actually one of the pre-requsites of this program I used. Sadly 106 people all saw each others numbers. i had imessage off, group off, mms off.
Okay so I had one when I was jb and it worked incredible. Instead of trying to do a group text it sent a text to each person individually so not everyone saw each others number. Does anyone know of a program that is in the app store that can do this?:(