There is a tracker at http://twitter.com/IPv4Countdown which currently calculates that all of IPv4 address space will be allocated by the end of February 2011. The 100,000,000 address mark was broken on Sunday.
Prediction: A couple of years from now, we will scoff at this campaign sort of like we now scoff at the Y2K panic back in 1999, except this time, there's quite a lot less of alarmist coverage in the popular media.
Because, let's face it, this is not armageddon. "Allocated" does not mean "used". What we are seeing is a gold rush to stake out the last available unallocated pieces of IPv4 space. Or rather just a land grab, because it's unlikely that there is a lot of gold in them thar hills. But certainly, the operators who are now buying the remaining available pieces of IANA's unallocated address space are hoping to make some good money putting it up for sale or lease, or at least turn a profit. If the laws of demand and supply hold, and IPv6 doesn't suddenly take off spectacularly, IPv4 address prices can be expected to rise, and some actors are no doubt gambling that they will rise a lot.
More : http://www.f-secure.com/weblog/archives/00002074.html