I know mine with DD1 has been shared, even to people who aren't friends of friends. DP's cousin was so excited when she went to the florist she bought a HUGE bunch of flowers, the lady said wow this person must be lucky what do you want written on the card and N said what do you write when someone has done.............................. and shared the story
Personally i don't mind, i love hearing about other peoples births, i prefer to hear it from them but if you hear it 2nd or 3rd hand and they don't have an isue with it then great.