We shouldn't forget that PoS is first meant to protect and carry on the blockchain, so if someone never opens their wallet to support the blockchain, he could be "taxed" for it.
+1. Interest is a reward for securing the network and we should never forget that.
On a more general note, I believe we should encourage cross-fertilisation amond the high-PoS family (PHS, HBN, GRW, NOBL (soon), CAP, TEK, HYP and maybe others). I think armin22 is considering creating a common website for all these PoS. A "feature comparison list" would help knowing which coin has yet to add which feature. Then a price/interest/number of coin ratio could be used as an incentive for spreading out the investment.
Or and could someone give a growthcoin.conf example? I have only one connection on my wallet