Yes Beckles, Maybe I did act a bit too harshly concerning priceline.
I only used the service twice -- once earlier this year and once friday night... both times my bids were rejected (plus on the second flight they gave me a two plane change itinerary.)
I put in reasonable bids (about 10-15 dollars less than what the airlines were charging) but no go.
It's great that the service is working for you and others though. Just not for me.