In Ad Age Randall Rothenberg offers "Eight Basic Steps to Reform Today's Creative Department." Number Eight is:
Start a creative blog. This is the cheapest way to share knowledge across office and global boundaries, and the fastest way for an agency to make sure the best ideas pollinate the world.
I, of course, agree since i wrote this back in June:
Blogs, it seems to me, should be an integral part of that effort. They are superior to email or meetings for keeping a whole team up to speed and for thrashing out differences.