Someone on the MacNN forums wanted to know if there was a way to automatically give each fax an unique name to avoid any risk of confusion or accidental overwriting of older faxes. This AppleScript folder action was my solution. I've posted it here since it may be useful to others. It renames incoming faxes to the format: Received Fax on [date & time when fax was received] from [CallerID].pdf
[robg adds: If you need additional help with folder action scripts, select Help: Mac Help in the Finder and search on folder action. The first match should be "Running an automation when a folder is changed," and that's the one you want to read.]

