The Great Wall of Lettuce has finally provided a use for my worm compost. I've been feeding those little guys for almost two years now and haven't been willing to use the "black garden gold" they reportedly produce. But now that I'm mixing my own soil using Mel's Mix, the worm compost has become invaluable. The only question is how much nitrogen does it really contain.
Here's the worm forum from GardenWeb: http://forums.gardenweb.com/forums/load/verm/msg0416465828214.html?13538