Just to clarify, the Trump campaign purchased large databases of user info from Experian, Epsilon, and other large data brokers in an attempt to target potential voters for negative ads. You can opt out of these databases, though I don't know how effective this is, as there is no requirement in law to offer opt-out:<p><a href="http://www.stopdatamining.me/opt-out-list/" rel="nofollow">http://www.stopdatamining.me/opt-out-list/</a><p>On another note: the article doesn't discuss any digital initiatives by the Clinton campaign. Given her advantage in fundraising, Clinton undoubtedly had a comparably large digital initiative that campaigned negatively against Trump. Without examining the whole ecosystem it's inaccurate to declare that Trump won because of digital. Both campaign's efforts may have more or less offset each other.