Re: ANN: RSS 'ping' interface at fyuze.com

["jdklub" <pseudonym@mindspring.com>]

> RSS 0.92 does pub-sub.
> http://backend.userland.com/rss092#ltcloudgtSubelementOfLtchannelgt

It does, but I think the type of interface we are talking about here 
is different. In order for the RSS 0.92 interface to work there has 
to be a live cloud on the other end. In most cases, there isn't. For 
example, Radio blogs, Blogger blogs, and Moveable Type blogs, all 
publish out to a server but cannot be called later by an 
aggregator*. They could, however, on the act of publishing make a 
call, or calls, to aggregators. Those aggregators could then 
register with and notify each other of changes they receive, in a 
two-way fashion. It is generally my understanding that blogs (or 
rather the apps that allow people to blog) can make calls, but are 
not easily called. 

* you seem to be working around this on sites hosted at 
radio.weblogs.com by pointing them to radio.xmlstoragesystem.com. 
i'm assuming on publish radio calls xmlstoragesystem to say that 
it's changed, and xmlstoragesytem then makes the calls out to other 
apps/aggregators, as well as fields new requests.