Hello,
I have seen, been mining a little myself but def noticed the large power mining going on!, it does seem to suggest someone is very interested in obtaining cash coins, the problem is if this one person has too many and once we get it more common, they might come back out from being hidden to try and "take over" or even ruin the coin value by large scale selling
Paul.
Even if someone have a lot of CASH, would't it be more profitable for him to sell it slowly at an higher price than dumping it at a point of killing the coin?
I think the selling is done automatically by miners. Many miners dump various coins at market just to cover their bills.
This is why you want to significantly lower the mining subsidy if you wanna have a chance at increasing the coin's value, short term and long term.