I have heard of several. Just today someone mentioned in a group I belong to that her hub was linked on an MSN article. Habee has gotten lots of offers to publish elsewhere; someone even wants to make a play out of one of her hubs. Several hubbers have gotten freelance jobs after people have found their profile. Someone about a year ago was offered to write a screenplay by someone who read their hubs. Someone else was asked to be interviewed by a TV show after they read one of her hubs.
While it's not having the article published elsewhere, lots of good can come out of being seen on Hubpages