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Could be. This quote from article sums it up pretty nicely:

"This is a phenomenon we saw back during the dot com days in the late 1990s where traditional companies would mention some kind of internet strategy and their stock price would jump up," commented Garrick Hileman from the University of Cambridge.

"When you see stock prices moving like this it does appear to be troubling - it's hard to say if there's a bubble but it certainly is indicative of a frothy investment market."

Plus, their miner looks like S5 with changed case and Kodak sticker on it.