If you've ever had food poisoning, you need to ask yourself the question "Do I want it again?" and then remember the golden rule. If you have to ask, you don't want to know the answer.
A few extra crabs aren't worth the risk of praying to the porcelain. Besides, you aren't the only one eating them and that kind of illness is reserved for only the worst enemies.
Not worth the risk to me.
Chris
"The Chesapeake does not impress those who know it best as the grandest or most of anything. For all its size and gross statistics, it is an intimate place where land and water intertwine in infinite varities of mood and pattern."
William W. Warner "Beautiful Swimmers"