Quote Originally Posted by jcismylord View Post
the fees are small

so, if not fees and taxes, what otherwise prevents "selling" large sums of BTCs to a bunch of your own "sockpuppet" wallets with the goal of manipulating the price?

I am not pretending to be an expert. Just asking.
Nothing honestly, and has been done before I've seen it at btc-e used by the whales to manipulate the price in the short term. Someone did that at OKCoin (former Chinese exchange which had 90% of trading volume of all Bitcoin trades at one point). Someone coded a bot to trade against that whale and ended up taking almost all of that persons Bitcoin before they pulled the order. They'll learn an expensive lesson when trading against hackers.