Read Mark Zuckerberg's Baby Announcement, Posted To — What Else? — Facebook

Big news for Facebook, and this time it's not about security settings or some cutting-edge acquisition. Rather, it's all about the company's First Family getting a new member incoming: Priscilla Chan and Mark Zuckerberg are expecting their first child, according to a post by Zuckerberg that went up on Friday morning. Here's what Zuckerberg and Chan wanted to share with the world — it's a candid and earnest message, reflecting on the couple's excitement, and the pain from a trio of past miscarriages.

So there you have it! A new member of the clan is on the way. Zuckerberg and Chan deserve credit for being willing to open up about a painful topic like miscarriage in the context of their pregnancy announcement — even as Zuckerberg termed it "a lonely experience" at first, it's true that miscarriage is a sadly common reality for countless would-be parents.

According to the Mayo Clinic, about 10 to 20 percent of pregnancies end in miscarriage, although that figure is still on the conservative side since many women miscarry before even realizing they're pregnant. In other words, it's only a lonely experience by virtue of the fact that it's not often a topic of public discussion, so it's great that Zuckerberg and Chan were willing to open up.