I have 2 DCs, full siblings, both adopted (at under 12mths), I have never posted any pics of them to my Facebook account, although I have privacy settings such that only my friends can see pics. Often after family gatherings family ask whether I will put any on there, and I always just email one or two pics directly to the key people as I worry about pictures ending up seen by birth family in some random twist of fate if they were out there on a social networking site.
Am I being over cautious tho?? Given everyone who could see the pics is aware of the issues? My DCs cousins certainly benefit from a closer rship with nanas and aunties due to them seeing pics of them doing stuff, and I would love to share Like this if it wasn't risky. I know the wider family think we're over zealous and a close friend has even made a point of telling me of her other adoptive mum friend who posts pics on fb, (albeit not v v clear, facing forward shots of her DS.) iirc this was a mum who even moved house early on post adopting due to risks around proximity to birth family.
If you've adopted, what do you do? Or if you're a fb aficionado, thoughts would be v helpful.