Take a look at www.google.com/intl/en/ipv6/statistics.html Zoom in to just show the last few months and look at the most recent peak on August 2nd: 49.84%. The next peak will hopefully push it to being over the 50% mark, which means nothing really, but it's still cool. Also, if you haven't visited it yet, check out isgithubipv6.live to see the status on whether github has managed to move past the ancient ipv4 protocol onto ipv6.