Recently, I saw one article that telling Internet marketer to build backlinks using Flickr.com.
Immediately, I tried that and looks like generated a lot of traffic too, easy and fast way of building traffic. If you have time, please login into flickr.com and create a profile there. Remember to include your site URL that you wanted to promote into the profile and start to post picture into it. Remember to select those with high quality picture that related to your niche and tag with your niche keywords. Eventually, you will have result.
From the research, you need to have average of 20 pictures to be submitted to your site on a monthly basis in order to see the result. Take your time, take a good quality or buy pictures online, you will definitely see the result.