I know it probably won't affect amsterdamcoin, but have you heard poloniex delisting coins:
"On May 2, 2017, the following will be delisted: BBR, BITS, C2, CURE, HZ, IOC, MYR, NOBL, NSR, QBK, QORA, OTL, RBY, SDC, UNITY, VOX [and] XMG."
https://www.cryptocoinsnews.com/cryptocurrency-exchange-poloniex-set-delist-17-altcoins/also c-cex delisting coins:
"We have to free up server resources for new coins by delisting some coins which have consistently low trading volume.
The following coins will be removed on 08.05.2017 if their average trading volume for the last month has not exceeded 0.2 BTC/day (6 BTC for last 30 days):
ArtexCoin [ATX], LuckChain [BASH], BiosCrypto [BIOS], BritCoin [BRIT], Bitquark [BTQ], CaliphCoin [CALC], PawnCash [CSH], CoreCoin [CRC], CreakCoin [CREAK], CereiPayCoin [CRPC], DubaiCoin [DBIC], DimeCoin [DIME], DT Token [DRACO], Eclipse [EC], EverGreenCoin [EGC], GoldBlocks [GB], BigLifeCoin [LFC], OTCCoin [OTX], PabyosiCoin [PBC], RideMyCar [RIDE], SunShotCoin [SSC], UCoin
, VectorCoin 2.0 [VEC2], PureVidz [VIDZ], VitalAir [VTL], Wcoin [WCN], WorldGoldCoin [WGC], Fenix [XFX], LiteChain [XLTC], ExodusCoin [XODUS], Isotope [XTP], ZeroCoin [ZCOIN], BitZeny [ZNY]. "