It does take awhile to create an infographics, but there are packages available with nice templates that you can use in building. I use piktochart.com, which is web-based and I also have used Instant AppInfographics
I do create signatures on photos with the URLs of the sites that I manage. But this is still a rather low-yielding process of obtaining visitors. It's always good to have direct linking techniques. Perhaps one of the best methods is to obtain visitors through social media campaigns. For example: images with quotes are very popular on Facebook... they spread easily. Of course, you should conduct such a campaign through your own Facebook fan page, which has a link to your site. This is quite effective...