Is there a web site which notifies you with email when a new version of an app is available (for apps like Winrar, Google Earth, phpBB, MediaWiki, Wordpress, Firefox)?
Similar to FileHippo, but slightly different (Focus is more on Windows Drivers, but also works for some programs):
I realize that there has been one year since you asked this question, however, if this is still of interest to you I thought you might be interested in this.
We developed a tool meant to help users achieve just that - notify you when there is a newer version for one of the applications you have installed on your Windows computer - and it's called Soft32 Updater.
You can find out more about this tool at http://updater.soft32.com