So glad I withdrew my ~200k BTS from there a couple weeks ago, after I bought, instead of letting it sit there.
If they go under I'll lose around 100k Qora that they refuse to credit, and 4 cents worth of dust thats below the trading minimums. So like 3 bucks.
Managed to avoid losing anything when they went down in February, because I had just spent the BTC I had buying BTS because it crashed that day, and the remaining BTC I had was in a buy order which they refunded when it came online.
I've had thousands of dollars of BTS there at various points, because I was dumb. So lucky! Though the month of pain and worrying when they went down was pretty horrible.
I think that on that day in February, before they went down, they may have had a bug in BTS and probably some other coins which put them in a fractional reserve situation. Its probably why BTS got dumped so hard that day, because some people had figured out there was a bug.
They may have gone into fractional reserve on that day, but they could still cover most of their BTS so they just hoped no one would ever notice. But too many people have been withdrawing, so now they are almost out?
This is all speculation, I have no actual real evidence. But its enough of a risk that I don't want to hold anything in bter. They've been hacked twice, and the second one put them heavily in debt. If you are going to hold coins on an exchange, you need to do it on ones with plenty of money, so that if they get hacked they can afford to have it come out of their own pockets instead of their customers.