Tom Tague of Thomson Reuters’ Open Calais and Tiffany Skackelford of Phase2 Technologies talk about their collaboration on the Open Calais, More Like This & Topic Hubs modules. Tiffany also talks a bit about their Open Publish install profile.
Angie Byron has a detailed explanation of setting up Open Calais here : http://www.lullabot.com/articles/introduction-calais