I’m happy to report that all-left.net is back!
Yahoo explains (in rather awkward prose, but I’m not complaining):
I sincerely apologize for the inconvenience this has caused that your domain forwarding is not working and you are getting a paid ad site.
Roderick, I am sorry to inform you that we are experiencing technical problem due to which your were experiencing the problem.
I have now corrected the problem a and accessed your domain address and I was able to access your forwarded website without any problem.
Now I need to do some updating on that page; but sufficit diei malitia sua.