No sidewalk is safe for Mark Zuckerberg 1.67K Melissa Gira Grant 09/16/08 05:00AM Filed to: We Read Twitter So Sheryl Sandberg Doesn't Have To We Read Twitter So Sheryl Sandberg Doesn't Have To Mark Zuckerberg twitter Valleywag This image was lost some time after publication. The next update on his whereabouts had better be from his gym. (Can you even waddle in shower shoes?)