>> I'm sure MC2/Netcoin's success wouldn't be affected by clones, and I think the devs shouldn't worry about it.
You are sure about it? Why?
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I can't be sure, but I'm pretty confident. I believe people will be able to differentiate what is the original and what is a cheap clone, and will support the original. Technically, there may not be much difference between Litecoin and *insert random clone here*, but Litecoin is still the one being successful, while all the clones will probably die in the near future.