Tag-o-verse

The different tagging services are integrating and cross-referencing each other, highlighting and discovering new, unexpected relationships between different tagged worlds:

Flickr
Delicious
Rojo
Furl
Where are you
Colr.org
Feeed
Technorati
Buzznet
43 things (and friends - 43 places, all consuming)
taglag
Millions of Games (MOG)
CiteULike
RawSugar

Did I miss anything else?

So, we tagged photos, URLs, articles, locations, colors, blogs, goals, consumed products.

But there is so much more to tag.