Question is, what will halving the reward do for I0Coin and for Bitcoin
In bitcoins case, mining will instantly become really unprofitable, will the relative scarcity drive up the price, will the network come to a screeching halt because miners turn off their rigs, halving difficulty
Most likely a combination of all of the above, exciting to see how Bitcoin and I0Coin will react to the first real change after the introduction of GPU mining
The only chain, that I'm aware of, which has experienced a reward reduction has been SolidCoin, and it happened through a code change, not through natural progression built into the system. But the effect was an almost immediate and sustained doubling in value from what I can remember. Actually the increased valuation effect happened even before the block reward reduction because people were preemptively pricing their coins ahead of the reduction, IIRC.
So if SC is any indication of what effect a reduction in block reward has, then it might well be worth holding onto I0Cs for another few months.