Agree with Tony re TM automatically resizing photos if required and Callum re as much description as you can do in the title. Makes searching so much easier if you have a preferred colour/label you like.  My other personal "thing" re buying is the postage. I never, ever bid on an item with 'postage to be arranged'. I simply cannot be bothered emailing backwards and forwards over postage or any negotiation that may eventuate.