Capria.TV noted Jakob Nielsen's tips on designing commercial messages for Twitter, Twitter Postings: Iterative Design,"Leave it to Jakob Nielsen to bring iterative design best practices to tweets. For those of you who use Twitter for commecial ends, as opposed to merely sharing moment by moment minutiae, this Useit article might be of interest. A few pointers on scheduling tweets are also given."
Twitter seems appropriate for Nielsen's style; for designs with graphics, other approaches, by Steve Krug for example, seem to lead to pleasant results.
Update: themediamogul notes "Great article on CEO's using Twitter," CEOs' Take on Twitter.
