From the KnowledgeBase
TigerTrade is a "classified ads" service primarily used by graduating students looking to sell their stuff around May. However, it is open year round and available to all members of the Princeton Community for online auctions and sales.
Students, faculty, and staff, should use Point to list items. See: point.princeton.edu
The site is best viewed with Microsoft Internet Explorer 4.0 and above. The account and password used to post at your netID and LDAP password.
Currently, only people with a Princeton University e-mail address may list items to sell. However, anyone may browse listings and contact the seller about making a purchase. Classified ads viewable by the general public can be found at: http://ttrade.tigerapps.org/.