UPDATE: See also New design for this blog
I just spent some time at the O2 Blog where I selected a new theme and categorized all 80 posts.
See image below for the new look, or visit http://o2platform.wordpress.com/ directly (please let me know what you think of).
The categorization of the post was quite interesting, and I really need to follow-up on the idea of creation a 'developers cookbook' for O2 (since there are lots of powerful scripts in there)
Here are the direct links to the most commonly used categories: