Do facebook and google handle oembed links?

[BartK]

Greets!

I was wondering if anyone knew whether facebook and google plus worked
with external oembed links (that is, embedding an external link on
facebook or g+, as opposed to embedding a g+ or facebook link on an
external page). I haven't seen much indication one way or another and
my tests seem to indicate that they don't, but I was wondering if
anyone knew for sure.

Thanks!

Bart