re: Some good news
Amazing what the topography looks like beneath the ocean:
[Map based on ETOPO2, showing beach ball plots derived from the Harvard centroid moment tensor (CMT) and Quick CMT catalogue (1977–2005). While fault plane solutions indicate a left-lateral strike-slip system along the Cayman Trough, thrust faults are observed in Oriente.]
From: http://www.geo.tu-freiberg.de/fernerkundung/people/florian_wobbe/project_cuba.html
From what I've read elsewhere, this is the third major quake reported in this fault/area. The first was in 1917 and the other in 1992 (6.9).