I never really got into it, but I suppose it's down to the individual user.
I never felt the need to take a picture, or record my voice, and send it to someone.
Most people I know use bluetooth/infrared to send pics to their friends, or transfer them to pc, and send via e-mail or a networking site.
I do send the odd picture, but maybe up to 5 times a year tops. It's handy having the option though!