Richard Schiffman gets it:
If what you have got to say is judged valuable and compelling, that audience may expand exponentially through tweets, Facebook shares and the post being picked up by other sites. Each blog, you soon discover, has a life of its own. Some die in utero and get little or no reactions, whereas others go viral, linger for weeks in cyberspace, or end up in the strangest places…
The point of a blog is to provoke thought, not to spell out some definitive and exhaustive theory of all and everything.
- Richard Schiffman: The Joys of Blogging (huffingtonpost.com)