Consumer-generated advertising works best when targeted to current customers and customers who have high levels of brand loyalty. This isn't necessary, especially if you are including the robots tag. One of the most time-consuming parts about link-building is actually finding places that will give you links. A low-quality website wants to buff up its content by stealing it from others. Balancing the readability of your website for both people and web crawlers should be a key part of your SEO strategy.