It's a marginal existence, pursued exclusively by those with a passion for islands.

BBC: Sailing in Croatia

We will lose distributions, as they'll be either completely eliminated or pushed into marginal existence by the roaring success of one or two players.

CNN: The future of Linux

Four billion people worldwide lie squarely at the bottom of the economic pyramid, eking out a marginal existence of about three dollars per day.

FORBES: Creating Entrepreneurs at the Bottom of the Economic Pyramid