Your site should remain fresh by incorporating new designs often so when customers return they don’t see the same old thing every time. If you went on a date with somebody and every time you went out they dressed in the same close, you would start to wonder if this person is worth going out with. The same is true for a website. You should try your best to keep things new on your site as often as you can. For example, change the deals and promotions posted, rearrange some of the design to make navigation easier, add new features, etc. The point is to keep customers interested and engaged so they look forward to coming back to your site to find something new each time.