Watch for a whale bid (anything 1M+ on this) to appear, increase and move up without getting whacked by low level 5>10-tick flippers.

Was 1M at .0028 - already 2.45M at .0028.

Those looking to move it up normally slap the ask despite the spread, which leads to the spread widening, the bid moving up but not filling, and an ever increasing spread as people find that only one or two people get any at any particular ask point.