If your site is accessible over ipv6 or you simply want to find other ipv6 enabled sites then a new web directory called Sixy might be of interest.
Unlike a lot of more traditional directories Sixy uses tags to categorise sites and as a site owner you can specify which ones you'd like associated with your site. Of course if you have tags, then naturally you'll end up with a tag cloud, so you can easily see which tags are the most popular etc.
It's an interesting idea and if your site is available over ipv6 it might be worth your while getting listed now.
