The percentage of people reading this who understand the transition question from IPv4 to IPv6 is likely to be high, as there’s a fair amount of computing knowledge about.
I found it useful to look at the following articles in this order:
For bloggers, the issue is that the number format in operation now [IPv4] is going to run out of addresses, speculatively early in 2011 and conservatively in early 2012. It would be as well to be on IPv6 by then.
I’m not sure what we, personally, need to do about it.