Brings financial tears to my eyes!
Cryptocoinsnews has also reported on the difficulty decrease and suggested miners have gone to other coins :-
https://www.cryptocoinsnews.com/bitcoin-mining-difficulty-decreases-first-time-almost-two-years/Just glad / hoping that there hasnt been a stealth coin created we dont know about, but yep maybe someone has switched off a farm or users have migrated for some pump and dump scheme.
Time will tell

Although how Cryptocoins news can suggest that people using Bitcoin SHA256 Asics can somehow be used as Scrypt miners for Solarcoin is most bizarre!