Blogs are a tactic, not a strategy
Steve Rubel points out that blogs and trackbacks aren’t the only thing happening these days (TrackBacks Are Dying.) Digg/reddit and lenses and instant messages and tags are all part of the same universe. Each serves a different purpose, but all of them are related and keep moving ideas around.
If you haven’t invested in a blog as a platform, perhaps you want to be the best in the world at something right next to a blog instead…