Highlighting a comment below by Ian, it appears that for some reason vflyer.com ads may be being deleted from craigslist. Ian says his was and my example post below indicates it was deleted also. I've re-posted may example vflyer.com ad and I'm going to track it closely to make sure it stays on CL a full 7 days without being deleted.
Are there any other examples of vflyer.com ads being deleted from CL?
UPDATE on Jan 14: Since I re-posted my demo vflyer.com ad on craigslist on Jan 9th it's still there. It's still there. So the issue with vflyer.com ads being deleted that Ian reported is I believe an anomaly.