Whether you're a dedicated knitter who bestows lovingly crafted gifts upon family and friends at every possible occasion, a sometimes knitter with a bag of fully conceived but half-completed projects, or a newcomer who has recently taken up the needles with great gusto, you know the rewards that this hobby can bring. You may also know that knitting as a hobby can verge on obsession-be it the compulsive purchasing of stunning hand-spun wool, the desire...