Folding kitchen cart

I've had my eye on a folding kitchen cart for awhile but I've been wondering how good it is and how well it would work in my galley kitchen. Has anyone who has bought one have comments about their experience with it?

Here's my favorite so far - Folding Kitchen Island and a review by someone whose has one.

Here are links to some others;

Oasis Folding Kitchen Carts - several variations available

Winsome Wood Foldable Kitchen Cart with Knife Block, Light Oak

Kitchen Island Company has several varieties available