Marketplace Listing Attributes

Marketplace listings comprise several required attributes, along with optional category-specific attributes.

Required for all listings	category, subcategory, title, description
FORSALE :: GENERAL	price
FORSALE :: BOOKS	price, isbn (13-digit), condition ('ANY', 'NEW', or 'USED')
FORSALE :: TICKETS	price
FORSALE :: ELECTRONICS	price, condition ('ANY', 'NEW', or 'USED')
FORSALE :: FURNITURE	price, condition ('ANY', 'NEW', or 'USED')
FORSALE :: AUTOS	price, condition ('ANY', 'NEW', or 'USED')
HOUSING :: GENERAL	num_beds, num_baths, dogs, cats, smoking, square_footage, street, crossstreet, postal
HOUSING :: RENTALS	num_beds, num_baths, dogs, cats, smoking, square_footage, street, crossstreet, postal, rent
HOUSING :: SUBLETS	num_beds, num_baths, dogs, cats, smoking, square_footage, street, crossstreet, postal, rent
HOUSING :: REALESTATE	num_beds, num_baths, dogs, cats, smoking, square_footage, street, crossstreet, postal, price
JOBS	pay, full, intern, summer, nonprofit, pay_type
FORSALE_WANTED :: BOOKS_WANTED	condition ('ANY', 'NEW', or 'USED'), isbn
FORSALE_WANTED :: FURNITURE_WANTED	condition ('ANY', 'NEW', or 'USED')
FORSALE_WANTED :: AUTOS_WANTED	condition ('ANY', 'NEW', or 'USED')
FORSALE_WANTED :: ELECTRONICS_WANTED	condition ('ANY', 'NEW', or 'USED')
HOUSING_WANTED :: GENERAL_WANTED	num_beds, num_baths, dogs, cats, smoking, square_footage, street, crossstreet, postal
HOUSING_WANTED :: SUBLETS_WANTED	num_beds, num_baths, dogs, cats, smoking, square_footage, street, crossstreet, postal
HOUSING_WANTED :: REALESTATE_WANTED	num_beds, num_baths, dogs, cats, smoking, square_footage, street, crossstreet, postal