"01/03:Dear Craigslist User,
We have been informed by different persons that your last post could
be used for scamming purposes. To prove that you are real and 02/03: not a
scam, please send us back your "MANAGE/EDIT/DELETE" link of your
post or will be flagged for removal.
Thank you for using Craiglist!
Craigslist.03/03:Inc"

I am assuming this is a scam because you should never give someone your manage/edit/ delete link.  This would give someone access to your craigslist account.