The coin needs to become useful... ie services and goods can be purchased for it.  Once that happens and the coins scarcity then it should rocket in price.  However if no services and goods become available soon, then people with large holding will dump all their coins and move back to BTC.  Holding is no good, people need to spend trade and gamble.

If even one business starts accepting Zetacoin for more than its worth this will cause the price to jump massively. EG

If Apple said 500 Zetacoin for an Iphone everyone would start buying Zetacoin to get the Iphone cheap, causing the Zetacoin to be worth more. Apple would make an initial loss but if they held on to the coin and other business followed suit then the coins high value would continue to rise and apple would then make even more profit.

this is an extreme example solely given to highlight how it could work