Image directories are gold mines of authoritative backlinks
Image directories are gold mines of authoritative backlinks. And unlike image sharing sites like Pinterest and Flikr, these sites allow followed links. Whether we're going to use icons, clip art or vectors, the basic process is the same.
To prevent spam submissions, nearly all image directories carefully screen submissions. And some are very picky about what they accept. Fortunately, you can get just about anything accepted if you submit images that their users are on the hunt for.
Once you have your images ready, it's time to upload them to your site. This way you can send the directories a link they can use to easily download the images. Put all of the images you're going to use into a folder. Then zip the folder containing the image set.