Marketers don't get consumers' concerns regarding consent. As it comes to data privacy and opt in to receiving marketing communications, marketers underestimate by up to 100% all consumer's areas of concern.
Yet, there's also opportunity - marketers underestimate our willingness to opt-in to their mailing lists. There's time to woo us, before the General Data Protection Regulation comes into effect, and a "failure to opt-out" will no longer do.
(tldr summary of 'Marketers underestimate our trust issues' at http://www.keek.be/2014/marketers-underestimate-our-trust-issues/ )