If you are serious about getting traffic to your lens I highly recommend using YouTube as a weapon in your arsenal.
If you are new to making videos, it is not as intimidating as you may think. I recommend buying a Flip camera if you do not already have one as they are easy to use and make a good quality video that is easy to load onto YouTube.
Once you have your camera, make a demonstration about a product, or a how to video that relates to your lens. Do not simply make a sales pitch. The demo or how to will be much more likely to draw in an interested visitor to your lens.
The traffic will come naturally once you load your video. The keywords you enter for your video will bring in viewers that are interested in the topic of your video and this will bring in highly targeted traffic. Just remember to put a link to your lens in the description of the video and you should soon see the traffic coming in.