I have just found a great article over on an O'Reilly site that talks about the steps that you can go through to deliver RSS content to your SPOT watch.
For those of you that haven't heard of SPOT before, SPOT stands for "Smart Personal Object Technology". This technology allows you to receive information over-the-air through the use of a data band broadcast alongside the FM radio band. The SPOT watch is managed though a couple of MSN sites: http://www.msndirect.com and http://direct.msn.com/ and through those sites you can configure things like:
Additionally, you can sign up to receive MSN instant messages direct to your watch (this is what is used to receive RSS feeds) as well as sync to your Outlook calendar. Once you have set-up these features, you'll never miss an appointment or instant message.
I have had my SPOT Watch for close to a year and absolutely love it. Let me know if you are using a SPOT device today.