One of my favorite vExperts, David Davis, made a video walk-through the vSphere Mini Monitor
The purpose of the vSphere Mini Monitor is to provide a simple extension of the vSphere Web SDK to allow for real-time alerting of important user-based events on your vCenter server. It is not meant to replace a holistic monitoring platform. I wrote it to be secure, multithreaded, and lightweight. It is simply a cool geeky tool.