Heh. He needs to get a livejournal.com account and do voice posts. I did that for a couple of years, it works well. You set it up so the username at livejournal is associated with your cell phone number. Then when you call the 800 number from your cell phone and leave a voice mail, it is routed to your livejournal page, and your friends can hear it. There's an automated transcription widget, so they can read what the computer thinks you said, and they can add edited transcriptions as well.
I liked it because I don't usually want to spend hours on the phone every night while I'm traveling, going over all the day's events with multiple people who all want to know where I am and that I am OK. But I do try to stay in touch so people won't worry so much.
Here's an example of my livejournal trip updates.