As you all know, Poloniex is a great platform for exchanging currencies that are less than mainstream. Unfortunately for any short term investors the withdraw function has been disabled for a few of the coins specifically Siacoin. Around 3 weeks ago Poloniex re-enabled their withdraw function for Siacoin and it ended badly for many users. The problem with the Poloniex/Siacoin combination is that in times of extremely high traffic the transfer is delayed. If it is delayed long enough the standard Siacoin wallet's receiving address changes. As a result the user is left with the message COMPLETE:ERROR in their Poloniex account and no Siacoin in their Siacoin wallet or their Poloniex wallet. To make this problem worse it seems that Poloniex has a team of only 3-4 adults or possibly 6 or 7 children looking through their support messages and very few of these users have been able to solve the issue. Be careful using Poloniex for Siacoin guys.