There were also text articles on the blog, one of which was even on the HN front-page for over 24 hours (it reported some friendly social-engineering by a then-competitor, now a YC company). The comics significantly outperformed the text articles in terms of engaged readers, though I didn't run the whole thing long enough to be of any practical help.
My partner and I are releasing an iPhone game soon, and we're planning to repeat this experiment but with somewhat longer-form comics. The idea is to communicate the human story behind the making of the app. If anyone is interested, my email is in my profile.