I think that's exactly the idea. If an annual nudge gets some folks to set up ipv6, then there is a steady increase in the size of the ipv6 network. For the most part, no one will have any reason to turn it off again the next day.

When can we start an annual "turn off ipv4" day? http://bgp.he.net/ipv6-progress-report.cgi suggests that we'll have to wait a while.

I think they're turning off fax and IPv4 on the same day, I read that somewhere.

I normally avoid posting jokes on HN, but this is highly relevant: http://www.thehighdefinite.com/wp-content/uploads/2010/02/20...

Ok, so I was reading about that in the FAQs, that website owners are supposed to turn off IPv6 after today in order to measure the "impact". Not sure what they mean by that.

Before IPv6 day the majors were afraid to enable v6 and accidentally break 1% of their users (somehow). Hopefully once the day is past and the world didn't end, everyone will be comfortable rolling out v6 whenever they want.