Industry veteran and US-based exchange Poloniex has just announced that it has added several USDT (tether) pairs as follows:

0x (ZRX);

Lisk (LSK);

Dogecoin (DOGE);

Golem (GNT); and

Siacoin (SIA).

The markets have already opened. Dogecoin and Golem appear to be seeing some volume already as illustrated below.