FYI - Bitshares withdrawals from Poloniex appear to be broken - you may lose/get your funds locked.

I tried to withdrawal some bitshares from my Poloniex account today and the withdrawal went to status "Complete:Error" Based on a google search there are several other posts on forums etc today or yesterday indicating this same error. If you are going to withdrawal you may want to use an alternate currency. I had no problems withdrawaling SYS and DGB at the same time.