They don't change the withdrawal fees fast enough: some coins have mooned which make the fees ridiculous.
Then again... if you can't withdraw, it really doesn't matter

Just like ripple, how fees become very ridiculous at this time. But all of the users can't withdraw their money from there.
https://bitcointalk.org/index.php?topic=378827.1080This was actually true if the fact that the hitbtc turned into the scam site. Someone sent the amount 27 days ago but it never appears in his account.