Mark Evans points out that Twitter founders Evan Williams and Biz Stone are launchng a new service called Medium. This time without any limits to the number of characters, and including photos. Based on their past success of launching blogs and Twitter, we should all pay close attention.
Rather than sorting posts by author like many existing sites, Medium sorts by topic. This focus on topic borrow, in some ways from Digg and Reddit, and illustrates how presenting information via topics is gaining more traction within digital content circles.