Online reviews, then, have become another form of internet marketing that small businesses can't afford to ignore. While many small businesses think that they can't do anything about online reviews, that's not true. Just by actively encouraging customers to post reviews about their experience small businesses can weight online reviews positively. Sixty-eight percent of consumers left a local business review when asked. So assuming a business's products or services are not subpar, unfair negative reviews will get buried by reviews by happier customers.
In contrast, the European Union's "Privacy and Electronic Communications Directive" restricts websites' ability to use consumer data much more comprehensively. The EU limitations restrict targeting by online advertisers; researchers have estimated online advertising effectiveness decreases on average by around 65% in Europe relative to the rest of the world.:58