There’s a new kid on the block and the edglings are a twitter over whether there’s room for another player in the presence application market. Pownce, the latest brain child from Digg founder, Kevin Rose, is off to a whirlwind start, with many asking whether or not it is already the “new” Twitter and Jaiku Killer. While Twitter and Jaiku are the current leaders, we’re really still too early to predict winners and losers in a market that is far…