Key points are not available for this paper at this time.
One advertising format that has grown significantly in recent years are known as Content Recommendation Networks (CRNs). CRNs are responsible for the widgets full of links that appear under headlines like "Recommended For You" and "Things You Might Like". Although CRNs have become quite popular with publishers, users complain about the low-quality of content promoted by CRNs, while regulators in the US and Europe have faulted CRNs for failing to label sponsored links as advertisements.
Bashir et al. (Thu,) studied this question.