https://bitcointalksearch.org/topic/recruiting-trolls-paid-to-troll-join-the-troll-army-mercenaries-at-work-695428
Only central banks can "mine" dollars, unless you want to practice a federal crime that can give you 10 years in jail
Let us say the creator of an altcoin deposited a stash of dollars, from which miners would be gradually rewarded.
Works similar to 'mining' of USD.
The incentives look much better if you consider the creator to be a large portion of the mining capacity of the network. By backing the blocks he doesn't earn, he gets to float the blocks he does. An open market will really back things in the long term as the initial seed USD runs out. In addition, he can gain transaction fees if the network becomes popular. After the seed USD runs out, it may have to break the peg and USDcoin would possibly become more valuable than USD unless more backers are found to keep mining more USD.
The network could run on transaction fees alone. Retailers could adopt it as it removes price volatility totally. If the number of transactions is high, miners would have a lot of incentive to keep their clients running.