Counterparty's proof-of-burn method of distribution could be used to distribute a PoS coin without the "scammy" associations of an IPO.
Tl;dr
Check out Clamcoin for a beautiful way of distributing PoS coins.
Can it be repeated though?
Someone who knew about the CLAMs distribution method before its launch would have stood to make an enormous profit by manipulating the system by creating hundreds/thousands of non-empty addresses beforehand.
........
There were a great many POS coins distributed to bitcointalk members last year. It could be repeated by scanning the genesis block of each coin for addresses to distribute to. It's too late to manipulate the genesis distribution of those coins now.
Some of them are dead, but you could probably find people prepared to make downloads of their blockchains available. Some of them are still alive like coin2, community coin, faircoin, NAS, and premineplus.
The dead ones include BTCtalkcoin, FootballCoin, freebies coin, lottoshares, sharecoin, and yellowcoin.
Forgot about NEM, it's a confirmed scam and it's already deaded.
