Effective 5/11/2014 Updated: November 21, 2015 All for-sale, for-trade listings must include a photo of the item for sale if it is offered for more than $100. The minimum photo size is 300x200 pixels, landscape or portrait format. For items costing more than $250.00, the photograph must include the CALLSIGN of the seller, clearly visible on a card or piece of paper. There is a scammer out there that has been reusing old photographs lifted from Google and other pages, and posting false for-sale listings. Having a picture that includes the callsign of the seller helps to establish that the item being offered actually exists. The callsign in the picture must have been present in the scene, alongside the item being offered. No digital photo editing of the callsign is permitted. The recommended physical size of the callsign is 1 inch tall letters.