On my jPOS page I added a link to a screencast that I did that shows the basic configuration and usage of the jPOS SysLogListener.
If you are not familiar with syslog, it is the logging daemon for Unix and Linux. There are implementation’s for MS Windows as well, such as Kiwi Syslogd. (and some that peel entries from the Windows/NT Event Log and forwards then to a centralized syslog server) Many alerting systems are based off of syslog events where you can define an action to call an external program/script, send an email/page/SMS notification. Or you can even use splunk as a syslog daemon and “google” your logs.
Enjoy the screencast.