I finally came across a jar of Fluff yesterday, so of course had to buy it to discover this thing that has been so raved about by all my East Coast friends.
And I now realize:
Fluff=Marshmallow Creme (as it's called on the West Coast)
Silly wabbit.

Thinking they were two totally different products!
Exactly the same.
So there ya go.
Good thing I love marshmallow... and all (okay, most) things involving sugar and eggwhites.
Now to try my first Fluffernutter sandwich.
(still never had one of those!)