What is this wall everybody is talking about? Sorry, im new to the cryptocurrency community. ...
@zerty: For the wall, take a look at any exchange where you see the "order book".
I try to explain...
On the coin exchange, the bidders place their purchase offers, e.g. 500 Satoshi to buy 1000 Coins (represents 0.00500000 BTC)
On the other site the sellers place their offers, e.g. 600 Satoshi to sell 1000 Coins (represents 0.00600000 BTC)
To simplify: The price can now increase as a buyer approaches and increases his bid, or the price can drop if one of the seller increases the price for its purchase offer.
In the order book you can see if more people want to sell, or if more people want to buy.
The wall: If now one comes, and places on the market a really large sale offer of e.g. coins worth 50 Bitcoin (millions of SAFEX), and he places that offer for let's say 601 Satoshi, then this is on the exchange what we call a "wall".
A wall is often very difficult to break through. On this example people would have to come and buy SAFEX for more more than 50 Bitcoin so the price could rise higher than the 601 Satoshi.
Walls are down, and up. They are easy to recognize. You can find more information in the trader manuals.