Wirelessly posted (lo2e's Blackberry: BlackBerry8530/5.0.0.973 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/105)
The "suburbs trick" is a trick that is used after you've bid once and been rejected. You go back to PL's home screen and instead of typing in the actual city location of the airport, you type in a nearby town/suburb. You are still able to select your desired airport(s) on the next screen and it isn't kicked back as a duplicate bid.