I just saw this posted:
"I got a email from Poloniex today about maintenance on the 17th December at 14:00 UTC for several hours. I wonder if it has anything to do with the removing lending for US 4. Maybe they will just remove the lending books all together, they don’t have many and I can’t remember the last time they added anything to the lending platform.
If it becomes more difficult to short MAID, and all shorts must close their positions, this could have a positive price impact. I vote $6.00 by the December 25th 2018"
https://poloniex.com/press-releases/2018.10.03-Poloniex-To-Remove-Margin-And-Lending-Products-For-US-Based-Customers/