Viral vloggers Sam and Nia are back on YouTube -- and pregnant again

They have all the ingredients for a 2015-kind of celebrity: a viral video, a heartbreaking story, a tawdry scandal, a near-brawl, a curious disappearance and, now, a happy ending.After multiple controversies, Christian vloggers Sam and Nia Rader are back on YouTube with another "surprise" video: "SON SHOCKS MOM WITH PREGNANCY ANNOUNCEMENT!!"