I don't think "that is just wrong" was complaining about Tiger's postings about her students. However, she's pointing out that it's very easy to give a little bit of info here, and a little bit of info there, and if someone takes the time to put it all together you've given out a lot more than you intended. (And Tiger specifically said in this thread that she never, ever, ever posted the name of the town where she lives...but she did.)
When my son signed up for an Instagram account without my knowledge (grrr), we had a LONG talk about Internet safety and how giving a little here and a little there can really add up. We picked one of his friends at random (someone he knows from school, but I don't really know) and I spent 15 minutes going through her posts online. I think he was shocked by how much information we could find. "Look, every Wednesday night she posts that she has soccer practice. And two Wednesdays ago she posted a photo of her soccer friends at 7:15 at ___ park. If we went to the park this Wednesday at 7:15, do you think we could find her?" We also know what school she goes to, what she looks like, when her birthday is, the name of her brother and her dog, who her orthodontist is, etc... Kids who go to her school have to live in a certain area, and we know her last name. How many families with that last name live within the boundaries. Oh, look, just one! Do you think that's her house? now we know where she lives, too. (Could have gotten that info out of the school directory, too... but...) And some of the info wasn't even posted by her. It was posted by others about her, or who tagged her... but it's still info, and that info is difficult to control. I think I scared him. He hardly posts anything anymore.
I am sure we all do it. I try not to post my kids' names or specifics about where we live... but I think I've posted bits and pieces once or twice when it was highly-relevant to a specific thread. I'm sure if someone went through (please don't), I have also been guilty of revealing more than I intend to. I think that was the point "that is just wrong" was making. Tiger was adamant that she *never* posts personal info... but she does. Just like all of us probably do.