For those of you that are the Geeks you understand the importance of this development. It is obvious at least in this initiative that Google wants to kick the utilization of Google Talk (GTalk) into a higher playing field.
For a more detailed explanation here is a quote from the original article at [Neowin.net]
“Basically GTalk can now communicate with users of other Jabber/XMPP servers — before GTalk was limited to only other GTalk users. This does not mean communication between MSN, Yahoo, or AOL because these services all use difference protocols. A full explination can be found on the Jabber.org website here.”