Glad to be of some use.
Yes, this one was definitely not "it" but I'd class it as a possible indicator.
Fortunately, as that quake was in a sparsely-populated region and fairly deep (at about 100km), it probably did little harm. It's close enough to the coast to possibly have resulted from some effects of the subducted plate (that runs down in under the land mass for some way as they generally do), and at that depth could be right near the farthermost reaches of that plate. Subduction zone quakes nearer the coast or just offshore are likely to be shallower, so even at around the same magnitude a quake in the lowlands near the coast would be a bigger concern.
Seeing as down the coast in Chile was the site of the biggest quake ever recorded -- the mag 9.5 Valdivia quake in 1960 -- there is the potential for this northern section to also have a pretty large one, perhaps even approaching a magnitude 9. I would not like to see it happen as it could be devastating, but the possibility exists.
Meanwhile we can still keep watch on other regions of interest and see what other "data" our various apps throw out. Mine has not offered anything of value on that score yet so I've simply drawn on what others have offered and rather esoterically gone from there. (But I often use an esoteric basis anyway over on the "Experiments in Alernative Methods of Earthquake Prediction" thread. )
edit on 14/5/12 by JustMike because: some typos