In corporate identity management I've been a long advocate of permanent identifiers for staff and clients. When Bob Jonkman has left the http://eduposse.org/url/17728 company, the id http://eduposse.org/url/17729 should be permanently blocked from use, so that when Bill Jonkman joins the company he doesn't receive or use the http://eduposse.org/url/17729 ID. Sadly, the perception …