Most of us have it -- whether quiet or blaring -- that inner voice that is the emotional equivalent of a giant eye roll. The type of comment that falls under the label of SNARK. Kept in check, one assumes, the habit is mostly harmless. Yet, New York writer Lauren Frey Daisley (see pic on left) doesn't necessarily agree. Not after she embarked on a snark diet -- swearing off all bitter remarks. The experience affected her psyche in ways that surprised her. What is behind our instinct to snark? Is it a harmless way of blowing off steam? Should we all take Lauren's tact and try to be nicer?