Plotting users on facebook I was playing with Munin, the "network resource monitoring tool". But you can also plot other things than CPU usage or network traffic. As long as you can capture it in a value. My default chat application is not facebook, but IRC. To chat with facebook users, I use a ZNC bouncer together with Bitlbee. +---------+ +---------+ +---------+ +---------+ | | | | | | | | | Client |--->| ZNC |--->| Bitlbee |--->| Facebook| | (me) | | (log) | | | | | +---------+ +---------+ +---------+ +---------+ The ZNC bouncer is logging the users coming and going to the channel when they use facebook. I used the Munin plugin "loggrep_" with the next config on that logfile: [loggrep_facebook] user rogier env.regex localhost sets mode env.label Facebook users env.logfile /home/rogier/.znc/users/rogier/moddata/log/facebook.log env.title User count on facebook So I filter the logfile for the text "localhost sets mode" because when a user came online, he get's a +v from bitlbee. After a while, you will get the next graph.