by Having screen provide session logging for each separate ssh session – this is very useful in case you ever need to “go back in time” and see what it was you did on the server
Put this in your .screenrc file:
# save the session logs
logtstamp on
logfile $HOME/.screenlogs/screenlog.%t.%Y-%M-%d.%c
# the session log will go into your home directory with a file name like /home/username/.screenlog/screenlog.hostname1.2012-Mar-07.19:29
# default screens – separate ssh session in each screen
# -L turns on logging for each new screen
# -t sets the title for each new screen
# the ssh screens are numbered in addition to being titled
screen -L -t hostname1 0 ssh hostname1
screen -L -t hostname2 1 ssh hostname2
screen -L -t hostname3 2 ssh hostname3