By Jason Gordon and Andrew Levad ( January 7, 2019, 3:26 PM EST) -- 2018, a year that felt like a decade and yet seemed to be over in a blink of an eye, was jam-packed with newsworthy legal and cultural developments. In the world of advertising, 2018 will be remembered as a year where the eternal tensions between advertising, privacy and honesty came to a head. From the landmark General Data Protection Regulation going into effect, to the Cambridge Analytica scandal and its impact on social media marketing, this was a year of industry wakeups and shakeups. There is far from enough room in one article to cover every topic that shaped advertising law in 2018, but here are the six trends that stood a head and shoulders above the rest and likely will continue to impact advertising and marketing for years to come....