Does submitting 1 blog post to social bookmarking sites result in my entire blog being submitted?

I am about to launch a blog. With their permission, I am using copyrighted images from some of the country's top photographers (magazine photographers) on my blog. I am also using many of my own images (on separate blog posts), which, obviously, I can do what I want with.
I would like to submit blog posts to social bookmarking sites, bu before I do, need a better understanding of how they operate.
From what I can see, a copy of the blog post I submit, is made and stored on the bookmarking site. Is that correct? If that is the case, then I will not be able to submit blog posts that contain those copyrighted images, as I would say that in using the site, you would grant a license to the site to use the images / release them into the public domain (and I do not have a license to sublicense).
But, as I still want to get backlinks to my site, I could submit the individual blog posts that contain my own images. If I did do this, would it mean that my whole blog is submitted to the social bookmarking site, or only the individual blog URL which was submitted? Would the copyrighted images on my website be affected in any way if the other blog posts were submitted?