Floating houses

I've been sayin' for about 14 months now that you couldn't get me to live in most parts of New Orleans unless my house was on pontoons.

Now somebody else has the right idea:

There are existing precedents of cost-effective amphibious houses, or houses that normally rest on the ground but float on buoyant foundations during a flood, both abroad in the Netherlands and at home along the rivers and bayous of South Louisiana. Why not capitalize on the advantages of buoyant foundations in the rebuilding of New Orleans and flood-prone areas throughout South Louisiana?

Why not, indeed?