One thing I noticed about the coverage of the Haiti disaster was no mention of aftershocks. As the Chart below the fold clearly shows, there have been lots and lots of LARGE aftershocks since the initial quake. While 4's aren't considered that big, you have to remember there's rubble and it makes all of the situation worse. Many of the aftershocks are above 5 on the ricter scale.
MAG UTC DATE-TIME LATdeg LON deg DEPTHkm Region
MAP 4.5 2010/01/16 15:59:55 18.455 -72.539 10.0 HAITI REGION
MAP 4.7 2010/01/15 21:04:46 18.012 -72.333 10.0 HAITI REGION
MAP 4.6 2010/01/15 20:04:11 18.439 -72.856 10.0 HAITI REGION
MAP 4.6 2010/01/15 13:41:43 18.401 -72.816 10.0 HAITI REGION
MAP 4.7 2010/01/15 08:56:06 18.470 -73.020 10.0 HAITI REGION
MAP 4.8 2010/01/14 12:39:04 18.418 -72.782 10.0 HAITI REGION
MAP 4.5 2010/01/14 10:32:29 18.480 -72.611 10.0 HAITI REGION
MAP 4.7 2010/01/14 08:15:42 18.330 -72.765 10.0 HAITI REGION
MAP 4.4 2010/01/14 05:03:06 18.476 -72.873 10.0 HAITI REGION
MAP 4.9 2010/01/13 22:21:14 18.359 -72.510 10.0 HAITI REGION
MAP 4.8 2010/01/13 21:26:17 18.519 -72.457 10.0 HAITI REGION
MAP 4.6 2010/01/13 18:54:16 18.447 -72.607 10.0 HAITI REGION
MAP 5.3 2010/01/13 14:43:44 18.453 -72.922 10.0 HAITI REGION
MAP 4.7 2010/01/13 12:41:44 18.411 -72.814 10.0 HAITI REGION
MAP 4.5 2010/01/13 12:28:25 18.409 -72.728 10.0 HAITI REGION
MAP 5.0 2010/01/13 07:23:04 18.355 -72.884 10.0 HAITI REGION
MAP 4.5 2010/01/13 06:58:27 18.346 -73.062 10.0 HAITI REGION
MAP 4.5 2010/01/13 06:48:03 18.379 -72.876 10.0 HAITI REGION
MAP 4.6 2010/01/13 06:24:17 18.339 -73.059 10.0 HAITI REGION
MAP 4.7 2010/01/13 05:49:24 18.431 -73.019 10.0 HAITI REGION
MAP 4.9 2010/01/13 05:24:02 18.438 -72.837 10.0 HAITI REGION
MAP 5.2 2010/01/13 05:18:02 18.386 -72.905 10.0 HAITI REGION
MAP 5.8 2010/01/13 05:02:57 18.375 -72.960 10.0 HAITI REGION
MAP 4.7 2010/01/13 03:31:57 18.254 -72.922 10.0 HAITI REGION
MAP 4.6 2010/01/13 03:17:12 18.398 -72.997 10.0 HAITI REGION
MAP 4.6 2010/01/13 02:54:19 18.393 -72.974 10.0 HAITI REGION
MAP 4.7 2010/01/13 02:43:47 18.484 -72.984 10.0 HAITI REGION
MAP 4.8 2010/01/13 02:26:34 18.470 -72.836 10.0 HAITI REGION
MAP 4.7 2010/01/13 02:17:57 18.451 -72.956 10.0 HAITI REGION
MAP 4.9 2010/01/13 02:11:31 18.445 -73.026 10.0 HAITI REGION
MAP 5.4 2010/01/13 01:57:35 18.459 -72.924 10.0 HAITI REGION
MAP 5.0 2010/01/13 01:55:16 18.397 -72.824 10.0 HAITI REGION
MAP 5.5 2010/01/13 01:36:31 18.363 -72.832 10.0 HAITI REGION
MAP 5.3 2010/01/13 01:32:45 18.384 -72.950 10.0 HAITI REGION
MAP 4.7 2010/01/13 01:24:32 18.494 -72.811 10.0 HAITI REGION
MAP 5.1 2010/01/13 01:16:52 18.431 -72.856 10.0 HAITI REGION
MAP 4.6 2010/01/13 01:05:49 18.537 -72.666 10.0 HAITI REGION
MAP 5.2 2010/01/13 00:59:06 18.257 -72.914 10.0 HAITI REGION
MAP 5.0 2010/01/13 00:43:27 18.541 -72.486 10.0 HAITI REGION
MAP 4.8 2010/01/13 00:23:56 18.410 -72.716 10.0 HAITI REGION
MAP 4.5 2010/01/12 23:47:39 18.471 -72.851 10.0 HAITI REGION
MAP 4.5 2010/01/12 23:35:40 18.437 -72.811 10.0 HAITI REGION
MAP 4.8 2010/01/12 23:27:36 18.454 -72.808 10.0 HAITI REGION
MAP 5.1 2010/01/12 23:12:04 18.386 -72.555 10.0 HAITI REGION
MAP 4.6 2010/01/12 23:07:03 18.496 -72.629 10.0 HAITI REGION
MAP 5.5 2010/01/12 22:12:05 18.485 -72.556 10.0 HAITI REGION
MAP 5.9 2010/01/12 22:00:41 18.369 -72.823 10.0 HAITI REGION
MAP 7.0 2010/01/12 21:53:10 18.457 -72.533 13.0 HAITI REGION