SamyGO

-Your "guide" is a leak from here.
-"Extras" section is the name given to donor's corner here (hence stupid copy/paste, isn't it?)
-If you did a single search as told, you'd know it's pointless to try to install Skype, it's over on server side and you won't be able to login anyway.
-Don't tell to listen when you don't.
-Enough?

I managed to install Skype on my F series.
Note: You have to login to the Samsung developer account. User: deelop, Pw: 000000 (or leave blank my tv).

Once you do this, you will see the "Samy" app under All Apps in the Smart Hub. Click it to install. Then restart the TV.

PROBLEM: On my F series, the Skype apps shows and starts however it is unable to connect to the Skype servers. Do others experience this?

On my F series also unable to connect to the Skype servers