Why did you choose the dollar currency sign? Is it pegged to USD?
Because we arent scared to troll the feds.
Does your new coin solves the principal scalability problem of BitCoin?
By that I assume the ability to endlessly print new money ?
To me BitCoin seems to be at least O(n2) system (every transaction is distributed to every member).
Is your system better or inherently the same in this regard?
All systems using a block chain have this as its basic feature. Solidcoin development assumes the need for super nodes rather than thinking every user will want to host the entire block chain. Anyway, transaction pruning is a possiblity the same as bitcoin where you dont need to have all the old tx.