Why does he put up Build walls at every .05 cents? Why not just put up one huge build wall.
Bitcoin's price can move rather rapidly. You're assuming one set (one bid wall) is the right trading approach and the right price. Maybe various people have different opinions about where the price is going. Some may put bids in at $5.45, some at $5.40, others may prefer $5.30. Prices are not set by one person (the alleged manipulator).
Why does he just not buy bitcoins to force the price higher, why does he use bidwalls right below the price, usually setup every .05 cents within a dollar lower than the price. To me it seems that he is just trying to stabalize the price, then trying to make a quick buck. Do you think that people base their purchase on bitcoins by looking at the bid side demand?
It's about price volatility again. Someone fires 20k bitcoins into the bids and fulfills many of the orders. I regularly put staggered bids and asks onto MtGox for this very reason. You would see my bids as manipulation. I see it as smart hedging against risk and taking advantage of market volatility when it occurs. If the price starts falling because people are selling like mad then I withdraw my bids in anticipation of a lower price. That's not manipulating the market. That's just not being stupid.
Why does he use bidwalls? Would it not be better to just not put in any bid orders, and just continue to buy on the spot or have a bot buy on the spot?
Markets don't really work like that. Have a look at share trading and you'll always see a lot of 'depth': bids and asks way above and below the current spot price. If everyone is only buying at the spot price than the spot price isn't going to move. People can't see how much interest there is in the market. Someone wanting to sell 20k of bitcoins would see only a few dozen being traded at the current spot price. Could they sell those 20k in one hit without market depth? They couldn't.
I get the feeling that this mysterious 'manipulator' (always singular, always one person) is being blamed for odd market trading, and even blamed for bitcoin's continuous flagging price. It all sounds a little like a conspiracy theory with very little evidence.