DP and I are expecting. It has come as a bit of a shock...
I sent a group email (close family) with the scan picture and everyone got very exited, had a barrage of messages and phone calls. My sister said wow what a shock, congrats, and haven't heard from her since. She hasn't liked the announcement DP made to his acquaintances on Facebook or my scan picture.
She uses Social media a lot so I don't think it's a case of rather having heard in person - we live pretty far away from all our family.