If they express interest, let's use the chat over there to explain what the interesting features of Decred are, in an informative way
Poloniex's chatbox is much better than BTC-e's trollbox, it's actually possible to use it to convey meaningful information, unlike btc-E
One of the advantages of being on Poloniex is just exposure, and awareness, many more people will be looking for info about Decred now.