There's a lot of great stuff on Twitter. And there's a lot more lousy stuff. Twitter thinks curation is really important, but isn't doing it itself--yet. So it's asking outsiders for help.
Sulia’s pitch is that while Twitter is a free-for-all where anyone can say anything about anything, most people still want to pay attention to a handful of experts. The service says it can find those experts on thousands of topics, using a combination of algorithms and humans, and it assembles them into curated lists.