A few days ago, I read a blog post by André Staltz about "AN OFF-GRID SOCIAL NETWORK". I immediately intrigued and I'll tell you why. Amateur Radio. The bulk of all amateur radio traffic takes place as either phone (voice) or CW (morse code). Textual communication is only a portion of the traffic. I have been on and done PSK31 to send real time messages to people that are listening right now. I have used WinLink to send email from my computer, over the radio, to a packet station in another state or another country. I am very active with APRS to send text messages over VHF (think real-time twitter for amateur radio). Actually, on thinking about about how APRS beacons go every 10 minutes, and beacon stations in general, I guess those do push more than voice does.