Winner? Loser? For many projects, it's hard to tell. But they're well worth pondering, because they get to the heart of what makes technologies succeed or fail. We studied the seven projects listed below but in the end couldn't give them thumbs up or thumbs down. So: you tell us! Each project is accompanied by a poll that will let you decide if it's a winner, a loser, or really just too close to call.

You Tell Us: Interactive Toy Robot

You Tell Us: Marine Electronic Highway

You Tell Us: Putting a Penguin in Your Pocket

You Tell Us: The Home Plug-In Hybrid Kit

You Tell Us: Is It a Mirage or Is It Holographic Storage?

You Tell Us: Electron Beams Zap Oil to Pump More Petrol

You Tell Us: Flexible Plastic Displays