I should have listened to the "poor customer service" comments on this page. How about "no customer service"?
I've run this for 6 months or so. In both 10.6 and 10.8, EMP will sometimes randomly select a name from devices on my network and use that instead of 'hostid' for backup filenames. I've mailed the developer a couple times but been totally ignored. At this point, I think the backups are redundant with Time Machine anyway. I can open up mail, go back to a date in TM, and the emails sent and received that day are all there. I hope this developer has a day-job because this piece of junk wasn't worth the $10 I paid for it.