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I had the bad luck of timing and trading them off way too early.

Expanse at 5-10k sat,
Darkcoin (dash) at 10 cents or something...

same with many others I happened to be mining but couldn't hold them long enough.

Oh man, that always eats at you... What do you think is worse, selling too soon and watching the stock/currency go up 10X from where you sold, or holding something too long and losing all of your original investment? Which one hurts more?