to be clear Im not a NXT shill. I'm a cryptocurrency expert. I got involved with NXT fairly recently. The NXT model is far more lucrative than Bitcoin. I've also been involved with the PPC community and I've worked on other algorithms in the past.
No offense but PPcoin is not a well chosen name. If you want an altcoin to succeed it needs a good name.
Bitcoin will continue to 'work' only for so long as the block reward continues to be valuable enough(in real terms) to offset an attack. We are very close to this threshold and color coins just might push it over the edge.
What do you mean by very close? Its at least 5 years more.