I just can't fathom how an interview with a company can "expire". If a candidate had what it takes to make it the first time, why should they have to go through the process a second time? It is such a shame that the HR people do not have to go through a similar screening when it comes to their pencil pushing jobs. Then maybe they'd understand the stress of an interview, the continued trial of wading in a holding pool and finally being told that you have to reapply again and go through the whole experience just to prove that you still "have what it takes"