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How is blacklisting of coins going to be enforced? It won't be. People can't even agree on the blocksize....
Very simply when BTC becomes mainstream and businesses accept it just like credit cards then the device that accepts the transaction will by law have a lookup to a blacklist.
It's so simple I can't believe I have to explain it. Not only that but there are even simpler ways for any government to enforce blacklisting on businesses. If they wished to do it to fiat they could simply by forcing businesses to use currency scanners.
If you believe this will never happen then that is your gamble, when it does happen and it will as history has shown government overreach is rampant and growing then those that protected themselves from it will be laughing all the way to the bank.

Don't use that overbearing tone when your argument is full of logical fallacies and you can't even understand my point. You're talking as if there is only one government in the world, or that all governments are in agreement, and they have absolute control. I'm not saying there is no physical way to blacklist, I'm saying there will be NO AGREEMENT on which coins to blacklist.
Does USD have fungibility problems? CAD? EUR? JPY? RMB?
They have serial numbers on them. Theoretically you can say "this serial number is now worthless". But they are working currencies. People trust them.
I think bitcoin's fungibility is a much smaller issue than people in this thread are led to believe.
please then explain how BTC-e could blacklist coins stolen from the dark market called Evolution?
Better yet, how about if that same thief sold you coins for fiat or something of value (hard asset)?
And then when you went to exchange those bitcoins for fiat or other goods the merchant or exchange tells you that those coins are blacklisted and are not accepted here (hopefully the return the coins to you).
I'm pretty sure it is NOT a "much smaller issue" than people in this thread are led to believe.
Your little argument only proves my point. I don't know what happened with BTC-e, but let's say what you're saying is true. Did OKcoin blacklist those coins? How about BTChina? Houbi? Circle? Coinbase? How about that coffee shop over there?
So these coins cannot be used on a single exchange. Well, you know what? Cryptocurrencies can't be used in most places. I'm sure there are more merchants that accept those bitcoins that are blacklisted by BTC-e than merchants that accept monero.
The main point is, can my money be used for services I want/need to use? If BTC-e wants to lose customers, they are free to do so. It'll be a long time before all or even most governments and companies come to an agreement on which coins to black or whitelist.