I'm writing a computer program that takes a bunch of images and quickly generates a list post from it very quickly. I plan to build a site using thousands or even millions of creative commons photos this way. I have no intentions of getting any Google traffic for a site like this; in fact, I think it violates the rules of Google. However, I'll be trying to get mostly social traffic (i.e. Stumbleupon, Pinterest, Twitter, Facebook, Instagram, etc.) If I know it's against Google's SEO rules and I won't be depending on Google traffic anyways, should I just go ahead and check the box in Wordpress that says to discourage search engines from indexing this site. I don't wish for a site like this to penalize my other sites which may depend on Google traffic.