Ah, gotcha. Perhaps it is working then. Just that my ebay page shows a lot of people I have yet to leave feedback to and the number doesn't appear to be decreasing. Perhaps they have not got round to it or can't be bothered. Perhaps, once in a while, I should check any old sales waiting for a feedback response.
Sure seems a lot of space on that page that could include a brief explanatory sentence of how it works. As a seller I have usually preferred to leave positive feedback once I've received payment, sort of to encourage people to leave feedback. But I guess this is the more appropriate approach.
Thanks.