I love the feeling of freedom that comes from recognizing that some yarn is just crap and deciding to throw it away. That's many hours of my life I've just liberated for some future project that I'll enjoy.
The yarn was fraying from the friction of the heddle. It had already snapped in one place and worn through in several others by the time I'd done the first 6 inches of weaving. A pity, because the colours were working even more nicely than I'd hoped, but I have plenty of other awesome yarns to work with.