It used to help, even a little after the relevancy change over, because they used to add the new listing to categories at a set time and if you knew when it was you could get your items on the first page, and even that 10 minutes on top would get a couple views. But now that it's random there is not rhyme or reason. Though it is best to stagger when you have to renew your listings, instead of doing the whole shop every 4 months I usually do one item every second and 3rd day...