Yes, it's true! These worms want your coffee! Take a look at the Chicagoist article by Melissa McEwen to learn more about Chicago's coffee waste (which averages out to about 40 tons every week) and how NLR can eliminate that waste by feeding it to the worms.
"'Over 40 tons of coffee grounds are thrown out every week from downtown Chicago alone' says Ed Hubbard, professional worm farmer at Nature’s Little Recyclers. All that waste is too bad, because his worms would love to feast on the spent coffee grounds, as well as the coffee filters, coffee chaff and paper coffee cups. In return they make a rich fertile compost that Hubbard calls 'caviar compost' for gardens and farms."