no i am not using it.
it is a very cool idea though. to have something that is actually the same price as USD and you can use it as fiat but without the huge fees banks have and all the delays associated with it.
but it has a lot of problems. one is what you said about the transparency. the other is about the price! it is not always equal to 1 USD, it has dropped multiple times in the past and i don't want taking that risk. and they never guarantee the price either so it is possible to wake up to 1 USDT = 0.5 USD and i don't want that.
So you couldn't find anything about Audits aswell? It would make things so much better if they would be weekly audited by a big company like 'Price Waterhouse Coopers', daily by a smaller one and all parties publishing the audits online.
What i do not understand: how can the USDT price drop? Only reason i see is when they don't have all the USDT backed.