How can I verify that my cron job is set up correctly to execute LinkMachine's automation script?

Go to Change Settings, Automation Settings. On that page, in the Automation History section, you should see regular messages such as this if your automation script is correctly being called:

Mar 23, 07:15pm Reciprocal Link Check: 100% Complete.

If you do not see messages like this (wait at least 24 hours after setting up the cron job before checking), the cron job may not be working correctly. Some web hosts allow you to set up a cron job so that you will automatically receive an e-mail containing the output of the program called via the cron job. If your web server allows this, it can be useful in determining the error. More information about correctling problems with the automation script can be found here.