This thread is all about which exchanges people use. Which ones are best (and why) and which ones to avoid at all costs.
I think you have misplaced your thread in this section, there is an exchange board available in this forum, you can move it here
Exchanges.
I'll just recommend you not to use poloniex, there's a lot of bad feedback for poloniex everywhere, if you do not want to lose all the altcoin you have, you should stay away from poloniex.