I don't think this is all bad though.
As a new parent you often wonder about when your kids will hit certain milestones – you wonder about when it's time to push them toward new skills and when to hold back. If it weren't for my friend's posting that picture of her daughter's name, I might not have considered that Lily could start learning to write. And when various other moms have had to tackle potty training, it's been a blessing to support each other and get tried-and-true tips.
Another one of my friends posted a picture of her 3-year-old daughter in the ER right after she got stitches for a tumble off the bed – having gone through a similar ordeal myself earlier this year, I immediately posted a note trying to cheer her up and remind her I'd been there.