Can You Tell Mary-Kate From Ashley? By Lauren Hepler Brow Beat Posted Wednesday, Aug. 24, 2011, at 6:07 PM Tweet Want more of your favorite content on the MSN homepage? Try the news, sports or entertainment editons. Tweet MYSLATE Save this story. Follow all Brow Beat articles. Follow the Arts section. Follow stories by Lauren Hepler. MySlate is a new tool that lets you track your favorite parts of Slate. You can follow authors and sections, track comment threads you're interested in, and more. Click here to load comments.