Next year Maine is going to require online marketers to get the explicit consent of customers to have their private information sold: Opt-In. Some people disagree; but I say “yes”, get’em. For more information, please see the links below.
http://www.mainelegislature.org/legis/bills/getPDF.asp?paper=SP0275&item=1&snum=129
https://thehill.com/opinion/technology/456920-maines-new-privacy-law-means-well-but-goes-wrong.