fair enough, Kellogg if that works for you and of course I understand you'd want to share your joy.
I guess I wouldn't choose to do it on FB but then it was hardly used here when I was PG..For me, something like this is just too personal (and too high stakes). I'd mention being PG in passing a few months down the line once the PG was properly established and pop a couple of baby photos on after the birth but that would be it. Unless friends asked for more, I wouldn't inflict it on them.
I was thinking of a particular person, scarcely a friend, who posted v early news of her pregnancy and then the other updates to everyone - you can, after all, group your friends and select who to tell rather than everyone. I truly think it is meaningless to just chuck in on your wall to everyone. There's nothing more lovely than a personal message from a close friend with such news, am delighted for them, truly but don't want all the gory details for so many to see on their homepage. Just my opinion.
The other thing I don't like is the out-and-out boasting - some people don't have marvellous lives for one so this rather rubs their faces in it. Many of us don't judge others by their latest i-pad/long-haul holiday/shopping trip/new kitchen..but get the sycophantic, inane responses to those comments! There's ways to tell things and so many choose to focus on the superficial and what they think will impress. It's like the school plaground writ large, who's ignored, who's got the most friends, who's most closely following the latest trend..I'm too old/sincere for all that!
I do love hearing from friends far away, what they're up to, photos, links, thoughts etc. I also love hearing from those who rarely post just to see how they're doing (also the occasional poster's postings tends to be much more interesting.
I still much prefer a phone call/email to FB or even MN for a good old rant!