Cryptorush is really dangerous for those who don't understand how it works... FYI, they DO NOT find the best price when you buy and sell (like every other exchange). They ONLY buy and sell at the price you set regardless if there are many better bids/asks for your order.
I've seen quite a few people get screwed badly today on big orders.
Don't worry too much about the big orders, the more people we stoke up will easily out do the big orders in many many multiple orders. I think they are preparing themselves to just buy into GPucoin. I am about to prepare another buy, hopefully the price doesn't rise too much as i am going to sell all my other coins NOt many now, but to buy all out into this coin so gpucoin, you better have something for us to work with and soon..