After positing that the Chilean earthquake shortened one of our Earth days (not to be confused with Earth Day) 1.26 microseconds, one has to consider that other earthquakes probably even out the effects. There was an earthquake in Haiti, then a small earthquake off the coast of Japan; an earthquake in Chile, then another in Taiwan. Forget trying to do the math on whether we've split the rotational difference between all of those earthquakes, though, because it's the end of the world anyway.

Update: Richard Lawson over at Gawker was apparently thinking the same thing and offers this link to expert seismologists saying it's just a coincidence. That's exactly what they always say in apocalyptic movies after the government finds out we're all inextricably fucked to our gills.