Most of it are from C-Cex. C-Cex holds the 15% of the total pesobit coin and it's staking and all of the coins they earn get dump by C-Cex. If everyone can move out their balance in C-Cex, we can help and keep the price growing.
You took the words right out of my mouth!
Also, looking at the failed exchange Yobit and their disrespect for PSB, we see that it's never a good idea to leave coin at an exchange. You could lose all your coin.