There are so many options for cheap VOIP now as to render doing it through FB a non-starter.

That said, I echo Fernapple's position - I am not a fan of social media and killed my FB account over a decade ago. So, I'll bet my Farmville crops are well past ripe...

My daughter and daughter in law call me thru facebook often and it irritates me because a regular call has better quality

Never occurred to me to use it as a way around long distance or roaming charges

No, I would not willingly use Facebook for anything, and any attempt to communicate with me via facebook would be a waste of time, because I just ignore any messages that come through facebook. In twelve months I retire, and then I will never have to look at anything on the Zuck's evil shabby ugly empire again.

Why not use facebook.com/airforcenurse1 like me? .. Because I ended up using Facebook like GMail phone or Google phone for overs 6 months using it like a phone in various countries for free when my cell phone did not work in these countries?