One day, years from now, Jennifer Christine Harris will scroll back to this week on her Facebook Timeline and regret everything she sees. (She'll also be, like, "I still don't get the point of Facebook Timeline. The interface is so confusing and the pictures are way too big!") The Des Moines native was arrested for having allegedly set fire to the home of Nikki Rasmussen, an old friend, while Nikki and her husband Jim were fast asleep. The person Jim instantly suspected was Harris, with whom his wife was having an ongoing dispute. It had played out on the pages of Facebook.