Factoid: if hash rate keeps outstripping difficulty adjustments such that blocks are generated at 12/hour instead of 6/hour, then the 210000th block happens sooner than otherwise projected, 9 months from now.
I kind of welcome it because the lower rate of bitcoin generation will create a smaller rate at which BTC are dumped for cash by those who mine to cash out immediately. More pressure for BTC appreciation. I don't expect it will unless more than one large scale FPGA/ASIC outfit comes in. It was ArtForz or someone associated with one such I recall said they would only scale up to no more than 1/2 of total hash rate because beyond that they are competing with themselves and experience diminishing returns. If more than one comes in, then all bets are off. They could squeeze the GPU miners down to nothing.
So in 9 months, only 25 coins are generated per block rather than 50, at some previously forecasted rate?
But with the doubling of miners and network hashing power recently, that will be more like 3-4 more months?
This bitcoin business is very interesting : ) Higher difficulties + lower block values rapidly changing the market.