I've been searching these and other forums for a few months now trying to figure out if there was a way to send one SMS message to a group of people using Google Voice without having to copy and paste it into a new message each time. I finally found something today, and since I know it's been asked by others before, I figured I would post it.
Group SMS Pro
The group texting with GV is still in Beta, but I've tried it several different times today, and it seems to be working fine for me on my Droid 2 (unrooted). Hope this will help others.