I’ve just been at Working Worlds, a virtual job fair in Second Life (here my SL blog), as an Amazon.com recruiter (positions in UK, DE or Lux).
It has been an interesting experience, and I can say that some of the candidates were really interesting persons.
There was also a Luxembourgish journalist, who wrote something about me (semi-translated in english for you, or here in french).
There is a great potential in these kind of things (virtual worlds), yet to be unleashed.
Early adopters could surely enjoy some great advantages in using it now.