I'm fairly new here, and rather new on Pinterest too, but I started a Pinterest account before my shop here. I would pin random things I found interesting or that inspired me. Once I opened my shop, I made a board just for my Etsy items, and I discovered I was getting a fair amount of traffic from the pins, and people were repinning my items, which meant those peoples followers were seeing my pins. And when you pin something straight from Etsy, it adds the price and a link to it. I would say it's definitely gotten me alot of views.