We must walk a fine line between informative self-promotion and outright bragging.

FORBES: How You Can Benefit By Bragging

That's largely because firms like 23andMe and Navigenics have to walk a fine line between providing medical information about patient's potential health and actually performing diagnosis.

ECONOMIST: Peering into your medical future is risky

As a social media property, LinkedIn has to walk a fine line between offering a free repository for its members' personal data and exploiting that data so it can continue supporting the free service.

FORBES: Magazine Article

As companies track and monitor more of our online behaviors and buying preferences to provide personalized, targeted offers, they are beginning to walk a fine line between observations that give value to the customer and invading privacy rights.

FORBES: Mobile Devices: Facing The 'Privacy Vs. Benefit' Trade Off

Consumer Focus said the government had to "walk a fine line" between securing the UK's energy supply and meeting carbon reduction targets, and keeping the cost to consumers down.

BBC: Energy bill to boost cleaner energy production