First person to place a buy order is at the top of the list when...

First person to place a buy order is at the top of the list when somebody sells at that price..

ie if 5 of us put up a buy order of 10c staggered 5 minutes a part, the first person who placed the order gets the first shares, and the last person to place the order is at the bottom of the list of shares at 10c..

Hope that makes sense....

It's either somebody mucking around and throwing up an order for the fun of it because the shares are currently in a trading halt, or its somebody who is "in the know" and thinks that when trading is resumed the price will be around the 10c mark and is taking an early position...