Heh, I wrote (more like "banged out") a bug tracking system for one of my teams about three weeks before I left (due to a promotion). This was about two years ago. When I left the company two months ago I went and visited the team to say goodbye and they are still using it and it is now firmly ingrained in their processes. In fact, the team leader says they couldn't live without it. My legacy will live on. Let's hear it for software that lives much longer than intended!