Thanks pm-r, and you know what, I think this is what has happened without me doing it. Even though I aborted the Maverick download, Skype 6.15 has suddenly appeared in my apps and is up and running. It must have happened when I did an Apple software update.
I'm just curious, but it sounds like your Skype upgrade avoided all the integrated Facbook crap it kept asking for, such as addresses and contact, life history and personal info etc., etc. ...which I denied and bypassed, but a PITA none the less.
Then I noticed a very small light grey on a darker grey text notice that all my wife's data would be shared!! What the ....!!!!
She doesn't even have a FB account, but uses mine when she wants to see what our friends etc. are up to.
That made me look at my Facebook Settings and in particular the 'Facebook App settings' and 'facebook Apps you use' etc. Scary stuff, now all Trashed.
So I did some web searching on various things like: Facebook and Skype; Facebook App settings; and on one of the Apps info pieces that said "...such in such is providing info to help track the info that will help me"... What... even more tracking stuff???
So, with more web searching I came up with some other scary stuff, and one you might want to read:
What You Can Do About Facebook Tracking - WSJ
Anyway, it wasn't all related to Skype but other stuff and sites I'd never been to or used, and maybe something you and others may want to check.
This almost needs it's own subject thread... but here's some info for now.