The 0.68s were withdrawn as were the 0.65s from ten minutes before opening. Why pay for something when there are plenty of willing offers at lower prices. What the 0.68 bids mean is that there is serious interest and bodes well for the future.

Orders Lots Bid Ask Lots Orders 2009Jun25 2009 9:20 ET
2 268 0.650 0.650 391 13
1 1 0.640 0.660 50 4
1 1 0.630 0.670 200 3
2 2 0.620 0.680 179 6
3 8 0.610 0.690 126 5
2009Jun25 9:29 ET
2 268 0.640 0.640 288 11
1 20 0.630 0.650 155 6
1 10 0.620 0.660 12 2
1 20 0.610 0.670 200 3
10 70 0.600 0.680 179 6