Specto is a desktop application that will watch any user-specified events (web, folder, ...). This will allow users, for instance, to specify a website to watch, and Specto will automatically check for updates on the web page. It will then notify the user when there is activity. This will allow the user to be informed of new updates/events instead of having to look out for them.
This has the potential to change the way you work! Starting with monitoring log files for changes, watching a folder being shared over a VPN and looking for comments on your blog, the list of use cases is endless.