the reason that some will be able to see this is that they had yahoo since before yahoo created there plus accounts. free acounts made before this had free pop3 and forwarding so those can still access it without paying.
Starting at step 3 the links don't appear for me. Are you already a Plus member?
As far as I can tell, EricNau is right -- no popping without forking over $20 a year.
Stupid Yahoo.