I was wondering if this already existed? Else in my mind it would make a great delivery channel no?
I've heard the idea before but haven't seen one implemented. It does seem like it could be useful, especially when the person to contact isn't known at configuration time (e.g. a shift worker). If you are interested, the PI Notifications Developers Guide (and companion code samples) cover how to build a delivery channel.
If you want to set up your own service, WCF has built-in support for publishing RSS:
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