The Poloniex announced on August 22 - through your facebook - that will delisted a good amount of coins. These coins will leave the Polo next day 09.05.2016 .
The following list below:
ABY;
ADN;
BITUSD;
CNMT;
DAO;
DSH;
FIBRE;
FLT
GAP;
GRS;
HYP;
IFC;
LQD;
MCN;
MINT;
MMC;
MNTA;
PIGGY;
PTS;
SILK;
SWARM;
WDC;
XC;
XCR;
XPB;
XUSD;
YACC.
Undoubtedly what draws the most attention is The Dao , although not surprising after hardfork that occurred in the ETH due to hacker attack.