I don't think it's in a bubble because it's not commonly held. Block chain tech is defiantly a great tool to get out of the system. Looking at sum alt coins.
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Good point. When the masses start talking about bitcoin perhaps that is near it's "top". Although I have noticed bitcoin being mentioned on the finance channel more than I have ever heard before... now we just need the masses to get involved in a large way. That may be what is happening right now...