Earlier this month yet another major provider of web-based productivity tools, ThinkFree, announced the launch of a Facebook version. Given that Facebook variants are typically less supple than their open-web counterparts, it has not always been plain to me what the fuss was about. An excerpt cited in a Zoho blog is illuminating:

Imagine, students can find their classmates on Facebook using the courses feature ... and then work collaboratively with them using Zoho.

Right. Whatever else Facebook might be, it is also still a directory.