A bit off topic but where are certifications (e.g. Cisco, Microsoft) useful? I am sure they are useful (both to candidates and companies) because people go to the effort to get these certs, and if they were useless everyone would have stopped long ago. I don't assume people do it for ego satisfaction.
But I've never worked anywhere where it has come up as an interview criterion (nobody has ever pointed it out when we are looking at a resume, for example). Is it a big business thing? Is it just an HR thing?