first of all, was it really necessary to bump a 2 year old thread (you could have made your own)
This is a sticky (pinned) thread with the title "Where do I find this app?" - I think he did the right thing instead of creating a new thread.
As Kreuger said, I normally download it from Skype's website directly. Alternatively, you have this http://askubuntu.com...i-install-skype