There is an RSS feed gadget in Ning, but it's a bit restricted in that it only supports a single feed. To have multiple feeds, you'd need multiple gadgets and for that something like
iGoogle,
Netvibes or
Pageflakes would provide a nicer interface. To work around this restriction, use of an external feed aggregation service such as
Yahoo! pipes or a
shared Google Reader collection would be needed.
There is a RSS feed reader gadget, but that's limited to 6 feeds. In both cases, it's not clear whether the feed gadget or feed pages are per-site or per-user controls.
Anyway, I've added an example of both to see what the community thinks. I've used the RSS gadget to post a collection of delicious bookmarks for the EG-353 project. I'm using the RSS Pages application to serve the
eg353project delicious bookmarks and tweets using the
#eg353project hashtag.
I seem to remember that
Elgg has much better support for importing and sharing RSS feeds. If we were keeping score, that would be Ning 0-1 Elgg.