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GChat used to use XMPP, as did Facebook IIRC. I also remember reading that iMessage uses it, and HipChat definitely uses an extended version. These could all b
by seanp2k2 12y ago
GChat used to use XMPP, as did Facebook IIRC. I also remember reading that iMessage uses it, and HipChat definitely uses an extended version. These could all be made to work together, but how would that keep users on the site where they're force-fed ads? It makes a little less sense in the HipChat / iMessage use-case.
Basically the same reason that little is available via RSS these days, and what is always has the "click here to read the whole article on our site, where we can show you ads!" after a few sentences / paragraphs.