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i mine eth. mainly to offset the cost of the videocards that are going into my next builds.
anyone who mines accepts the fact that the coin they are mining could faceplant tomorrow. its part of the mining game.
Well that would be the way for veteran miners, but a shitload of eth miners are people who missed the bitcoin boat and hope to ride on the next big thing...
But from the forum, I see very famous miners like Helix, Marvel9, philips 1957 etc are all adding rigs.