You can view the page at http://forums.pinstack.com/content.php?r=2016-SMS-101... Smartphone News forum
I do not use SMS very often in comparison to email, BBM, and IM (Gtalk/Yahoo). I found out that when someone sent an SMS to multiple recipients and I simply typed something and replied, it ended up being the equivalent of "reply all" in email. I found out when people texted me back asking who I was.
Since then, I always press the BlackBerry button and edit the recipients so I am only replying to the sender, not everyone, especially since the sender might have sent the message to people I do not even know.