While its really cool that they have raised 15-X donation, for the "staring eyes" banner on every single wiki, for a site that has 400 million monthly users, 47 K still seems less. I would have expected atleast double the amount.
They're currently pulling in over $400K per day. If they keep it up, and/or the pattern from prior years holds, they should have no problem raising their $16 million target by January 15th.