termcast.org is a terminal session sharing service. You can use it to share your terminal session in real time, or to make a recording of your terminal session. Both live and recorded sessions can be watched here on https://termcast.org/ in a modern web browser. Live sessions can also be watched via ssh, telnet or nc (netcat).
You can also mark your live or recorded session as hidden. A hidden live sessions will not show up in Live Streams, and a hidden recording will not show up in Records. To access a hidden session, you have to know the exact URL / session key.
People use it for Pair Programming, or to share the progress in Roguelike games (or actually any games playable in Unix console), like NetHack, or Dungeon Crawl, or Star Trek, tint, etc. You can use recorded sessions as tutorials (for example, here's a tutorial for termcast.org).
ssh termcast.org (or telnet termcast.org) and choose a session from the menu on the main screen. Press q to quit watching, and q again to disconnect. Or you can just click Live Streams or Records in the site menu bar, and watch it in your browser.ssh, an SSH public key, and a script program. Both ssh and script are usually already installed on most Linux and OS X machines. Or you can use ssh and tmux. Or something else completely, actually. See our HowTo for more details.Not really. There are some benefits in registering, though -- see WhyRegister.