You can margin call with your own BTS, this is what I did just now.
For example, make a 100 000 BTS deposit and you can margin call (long in my case). Just be very careful to have a large marge (Est. Liquidation Price 175 in my case).
This is the way I found to buy BTS with no money. If you do it cleverly (say buy 10 000 BTS for a deposit of 100 000 BTS), it should be ok. If every BTS holder do it margin dumpers are dead.
This is exactly what everyone of us including BM should have been doing..The level of comfort depends to each of us..Since I didn't have much BTS and I wanted to support the price, I got margin long with my bts as collateral but unfortunately not having a lot of comfort I played a very risky game and lost big time..Someone with millions BTS may support the price by creating walls and have a lot of comfort not to get margin called since he would use for 1 mil BTS to buy 300k BTS and not 2.5 mil BTS..
We all want to trade eventually in our platform but until this is ready we could have supported the price in Polo, BTS become expensive, people want to learn what is BTS and gradually we move on from Polo to our DEX..
Instead of that even people preaching about BTS in here all the time, when they show the dumping started to dump as well and once the dumping starts it never ends..Even at this level and with BTC retracing there is no buy support in Polo..Hence in the future we will end up with a great product, "worthless" BTS and desperate hodlers who for the last two years have supported the project losing their money..
Anyway...