I list minimally 4 items a day. I try to consider the best times to list. I live on the West coast, and the greater population is on the east coast, so I try to list in four items every morning, and then I do my relisting every afternoon betweem 3 -5, which I feel ideally hits the east and west coasts evenly. At least once a week, I try to relist items late at night, to catch the internatioinal customers :) Right, wrong or indifferent, it seems to work for me :)