I've never understood the passion for the boiled or steamed Blue Crab on the Atlantic coast. Too much work for too little reward - though they are by far the tastiest crab in the world, and a true Maryland Crab Cake is the best. A lobster rewards effort better, but lobsters do not live in Maryland.
(Sauteed soft-shelled - moulting - Blue Crabs are another matter entirely. Great stuff.) Spelling note: "moult" or "molt" are both acceptable spellings, but apparently "molt" is more American.
Some Blue Crab links:
The Peoples' Lobster
A little natural history of the Blue Crab
How to correctly "pick" a crab
How Blue Crabs moult