The second phase is more of an incentive for investors who wish to buy in to buy in during phase 1. We initially did not intend on making a second phase but realized in the case we do not hit the exchanges within the first week of launch, other people who may have missed phase 1 can still buy USE at (what we consider) to be a relatively low rate. We do not expect our IPO coins to be sold out at all, our initial goal was to be able to reduce the max. supply as much as possible, we will be able to do so by destroying any unsold coins from our IPO, as well as any remaining coins that are not claimed from our free distribution pool.