Tracking exceptions thrown by your apps worldwide

This is an interesting, and free, service that you hook your app up to and when it throws an exception, it’ll log it w/ the service so that you can track it from afar.

These kinds of services are exactly what web services are wonderful for. Does anyone know of any other such services? I’m embarrassed to say that I don’t actually know, but does MS provide one in this space or other developer-oriented web services for other than development?