Most pinks and OTC's are traded on an electronic board and when someone puts in a sell or buy, it is sent electronically to the board. If it is close enough to the current price, it activates the trigger - if it is way off - it may or may not be visible. You can call Automated Trading Desk or Knight Trading Group to verify - to me, it doesn't really make a difference how many are showing bids @ .0001 or asks @ .05.