Suprnova will send you an account number, then if you want, you can use that account number to store your Pascal Coins.
If you'll receive more than 1 account number, you can sell the rest of the empty account numbers.
Empty account numbers have value as well, please be guided.
Does it mean I cannot use Poloniex address to receive mined pasc from pool directly?
Other than coins, suprnova will also distribute account numbers which can be sent only to desktop wallet.
When you solo mine and found a block, you will receive reward of 100 coins + 5 account numbers.
With pool mining, only the pool receives the account numbers. That's why suprnova is now distributing those account numbers with miners.
And other pools should also follow, distributing the account numbers.
Account numbers are like bitcoin addresses. You can freely generate bitcoin addresses. But with Pascal they are limited : 1 block = 5 addresses/account numbers only. So you must not throw away your account numbers, they have value as well.
If I just want to mine to an exchange, does the account number matter? Or how can I get those numbers?