I am a mayor of a place I know to be a duplicate, but I still can't merge it. It says this on the edit venue page:
Super User editing tools
To help keep foursquare venues accurate, we have a few tools for trusted users that let them edit, update, or merge venues. Thanks for helping to improve foursquare venue listings!
but there is no option to merge, only to edit the venue address?
Best Answer
A mayor can only edit the information for a venue. To merge venues, you must be a Superuser who has been selected by the Foursquare staff.