Pinterest can be extremely effective but it's not as simple as just adding a few images and waiting for the clicks to roll in...
Do you have content that people on pinterest would find interesting? Is what you have to share something you have more content on to warrant visiting your site for? Are you going to have the time to do more than just post out and interact, build a following and establish yourself in the community.
I have used Pinterest account for sharing images, but i have same doubt of whether there is increase in any traffic of our own website.
What would make people come to your site to accomplish that goal?