I have read a lot from many post on why we should avoid using POLONIEX because of so many reasons that every system can have. Look at this post posted two Month ego..
I Guess this was sometime late May This year.
This writer was really warning Steemit users to avoid using Poloniex Just because of some technical problem that was later on rectified and the system is working on well. Most of the transactions which were halted were approved and various accounts credited.
Check on this screenshot from POLONIEX late May
This really explains the entire scenario. There was a problem by then and they were trying to fix.
I do not work at POLONIEX but i am just a user who have relied on this exchange site for my every transactions. But guys we should stop malicious ways of spoiling the reputations of companies because of technical problem that every system can get. POLONIEX has its social medias that it posts its updates. So as a user, you should take precautions before blindly sending your cryptos. Not only to POLONIEX but to any exchange sites.