Yes, but we're saying "We can neither confirm nor deny the existence of <https://www.beeminder.com/djw/ml>, because you are Forbidden (403) from poking around this user's goalnamespace, you Nosy Neighbor!"
Want to learn more about our glomarizing, or just nerd out about web standards? We wrote a blog post about it.
If this seems like a mistake on our part, please let us know.