Actually the moon is why the earth is volcanically active, at this stage in our evolution. The main theory goes, the earth being volcanically active is also responsible for life on this planet. I don't remember the details, but it has something to do with all that activity stirring up the elements in a way that is good, overall, for life.
So yes, the moon does cause earthquakes. A little closer, a little more likely? I kind of doubt that.