Report Listing
Listing report link currently goes nowhere. flag inappropriate or irrelevant posts and bring them to the attention of the admin
a number of packages exist, but are out of date or poorly documented-- in the views, get information about the listing object in question and send an email to admin https://docs.djangoproject.com/en/1.7/topics/email/, specifically https://docs.djangoproject.com/en/1.7/topics/email/#mail-admins
Ideas for extension:
Can only send one email per listing (no spam) trigger something in the models that it's been flagged (flagged by more than one person)
put an element on the page alerting other user that this listing has been reported