Hi
I had the exact same worry yesterday! https://steemit.com/steemit/@beesteem/steem-temporarily-disabled-at-poloniex-com
I admire that you already checked other options. I think i ll have to do the same. It is all about trust. I wish you a wise decision. Unluckily, our STEEM is currently still locked up....
I don't want to make the same mistake again. I will take my time and choose a good provider that is mutually beneficial.
Sounds reasonable. No panic.