Your words about creative expression, and pushing your own thinking by forcing yourself to articulate thoughts ring very true to me, but I think this post does not address a primary motivation of most vc bloggers which is it's use as an enterprise tool...blogging, when done correctly is an extremely scalable tool to 1) establish credibility/intelligence relative to competition, 2) build proprietary deal flow, 3)establish a voice/presence in geographic markets where you do not physically exist (i.e. nyc for flybridge), and 4) recruit and maintain a pool of talent within your online community that establishes your firm as a center of entrepreneurial activity (brand advertising). I wrote a blog post a few weeks ago about venture capitalist's implementing this strategy in the New York market that you might find interesting: http://bit.ly/sgii3