AlumWire is a new social network designed to create professional opportunities for college students, alumni and faculty members. As far as I'm aware, you need a .edu email address or an invite to sign up. You can also log in with your Facebook account details - another good use of the Facebook API. The service began at Harvard University and the University of California, Berkeley, and over 1000 US colleges are supported. Employers can use the network for recruiting, and students can use it to connect professionally.
Simply put, Alumwire is Facebook with business networking: you create a profile, add a resume and join business-related networks. There's also a calendar and messaging. But the problem it faces (and the main reason it definitely won't take off, aside from a lightweight feature set) is the same as many of the services that support the Facebook API: it would be trivial for Facebook to add this stuff if they wanted to. What's more, Facebook is already being used by employers, whether the students like it or not. That said, the growing number of services adding support for the Facebook API can only be a good thing: perhaps one day we'll see a killer service built on it that Facebook decides to snap up and integrate into the core product.
See also Tixology, another service leveraging the Facebook API.
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