Hello there 🙂
I wrote a little shell script under OpenBSD that catch the log conversation of user and generates number of messages and words by hour.
the script can be found here: http://stuffresearch.tor.hu/tools/spec_log
copy the script under /usr/bin and then do : chmod +x /usr/bin/spec_log
put under cron: * 23 * * * /usr/bin/spec_log 2>&1 > /dev/null
Script will execute every day at 23h.
Feel free to modify and improve 🙂