I'm not sure if location based "topics/feeds" have been discussed in the
past, but here's something else that I've been playing around with.
I've been including 'hub.lat' and 'hub.lon' parameters in subscription
requests and then filtering inbound feeds by location (when available).
for example...
hub.callback=http://your.hostname.com&hub.lat=39.51&hub.lon=76.24
I'd be interested in getting feedback - interesting, not interesting,
doesn't fit...type stuff?
Here's a small application spike (still rough around the edges) that
I've been playing around with http://www.localhash.com/
Thanks