I used to use Skype, not much, but I had it installed and it was there. Ever since it was bought my MSFT, my first impulse was to uninstall it. Never missed it. Before G+ Hangouts became my go to place for video chat, I used Jitsi (google it) with mixed results, but, it isn't tainted by the touch of Ballmer & Co.
The marriage of MSFT and Facebook, will be deadly for both. Each of them follow the same principles of locked in customers, there's going to be a struggle to whom the payment ( our data ) belongs. And also to whom the users are locked to. It may work for a short time, and on a market where there are no options, but, that was before Google started to fight them both, with a browser, several OS's, a social network, IM platforms and with no lock ins.
To me, it's a no brainer decision. But, I no longer try to call my friends from Facebook, I don't care anymore. I tried, they simply ignored it, it's their loss, and I say "Let them BURN". Not to friendly you say? Well, I'm their friend, not their father, they are free to make as many mistakes in their lives as they want. I'll be here to apply generous doses of I Told You So with a smirk. Next time they'll (maybe) hear me.