[gcr]

You could at least hack something like that up. From within screen, yu should be able to type C-a H to begin logging to the `screenlog.0` file.

From another terminal, you can then do something like tail -f screenlog.0 | etherpad mypad

Also, look into the ttyrec and script commands

The limitations: The screen method won't follow you across screens and it won't interpret ansi escape codes