Wayne, If you're publishing your stories with hot links for reading devices like the new Kindle Fire, etc. you can link back to your story here on hubpages, I'm sure.(I didn't get this from the hubpage horses' mouth, so to speak, but somehow it seems to have come up before.) That would mean that you're bringing more people to hubpages and the story is still exclusive to them. You can google "add hot links to ebooks," and I'm sure you'll find great suggestions. If you email hubpages, you can find out for sure if this would be a nice work around.
You don't have to give the "ugly" url which would muck up the looks of your work in an ebook and would be useless for people whose ebook reader doesn't link. You could just type an intro like, '"The Wild Wide World of Wayne," published on hubpages.com, is based on the true life story of a writer tearing his hair out as he publishes an ebook.' Link the title to the long probably unweildy url, and the title only will be underlined for the reader who can link. The reader with an older reading device will still be able to know where the story is and can easily get to it as a loyal faithful reader will do.
If you decide to publish an app with your short stories, you can use ibuildapp - easily link-able to your stories no matter where you've published them. Then readers can read them on mobile devices. I made an app with them - easy peezy (except for the upload which my software husband helped me with, but they have help for you). My app is in the googleplay store and will be in the Applestore soon.
There might be a few links for you in my article on "How to Publish A Children's Book" (or something like that title) I really see nothing but positives about adding links to our ebooks. It's the future that's here right now. Cheers and Luck!