Movim provides a quick comparison between the two protocols and shows how blogs work. Wow, this makes so much more sense than ActivityPub tbh. There's also a good example of XML strength: embedding an Atom feed in XMPP messages.

There was a long write-up in this note, but then I removed it. Read the bookmarked article with an open heart.

The XML Bookmark Exchange Language, or XBEL, is an Internet "bookmarks" interchange format.