Marshall Kirkpatrick over at ReadWrite Web has a good piece on Amazon founder Jeff Bezos investing in Twitter through a new round rumored to be $15 m, primarily for much-needed infrastructure improvements.
As Marshall points out, Amazon is a poster child for early Internet scalability. It is also among the most rock solid of Web sites, and for that matter, retailers in general. I hope that Bezos' wisdom as well as his financial resources serve Twitter well.