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It all depends if there is demand for steem the currency. It doesnt even need to reach critical mass as long as the demand for steem is there. I wrote a post about this but no one seem to care https://steemit.com/steem/@snowflake/fu-k-this-bs-today-ima-gonna-be-on-the-trending-page

I think that 0.5 of Instagram is easy possible.

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