Could RSSPing Give Realtime Updates for Search?

SEO Training.
Story Text:
Here's an interesting bit of tech being launched by David Galbraith and Matt Mulenweg (wists,wordpress) that promises to pave the way for real-time updates for Search indexing. RSSPing is an extension to the existing ping standard that adds metadata about what exactly was updated, and where.
Im not 100% sure i get it, im going to need to run over the spec another time, but i think it's worthy of your attention if your technically minded. This from the homepage:

SS Ping combines RSS item metadata with site update information. It enhances the current ping specification, adding information about exactly what has been updated or published, with the notification that something has been updated. RSS Ping reduces the need to revisit or work done by aggregators and search engines when revisiting the publisher site after being pinged, to provide truly real-time updates for information on the Web.

Interesting eh?

- Y! MyWeb

Support

There will be support for this in WordPress and Ping-O-Matic soon.


Matt, thanks. I found it a

Matt, thanks.

I found it a little hard to grasp, can you give an idiot proof explanation for the advantages of RSSPing?