Arianna Huffington, personality and political blogger, continues to embrace all things new and Web 2.0 by introducing Digg-like functionality to her self-named web property, The Huffington Post, or Huffpo for short. Dubbed, unsurprisingly, HuffIt, the beta service apes Kevin Rose's voting and news aggregating service Digg. Although not a direct threat, the introduction does shed light on the challenges facing Digg.