I think the huge sell wall is simply a desire by one/some investors to push the price down to the point where they can acquire even more BC... naturally with the eventual purpose of then dumping those coins when they've appreciated enough.
If I hadn't just finished off my BTC stack investing (to HOLD) BC the day before yesterday... I'd throw a 10BTC buy into that wall and I bet it would get pulled almost instantly and reappear later.
Its just manipulation, they don't intend to sell, you can see. I just broke it up with only small buy order up to its door step, now its broken into several mini-walls. They don't want to loose the BC so they try to stagger it to minimize actually 'selling' any. I hope soon people learn that a sell wall like that is nothing but attempt to lower price so they can buy. If someone wanted to sell why wouldn't they sell off smaller pieces, without pushing the price down?
A sell wall means BUY, because a bigger fish than you is trying to do the same. We have to know our place in the food chain.
