According to the USGS, the frequency of large earthquakes has remained constant over the last century. In a typical year, the planet has roughly 17 “major” earthquakes (measuring 7.0 to 7.9 on the Richter scale) and one “great” earthquake (measuring 8.0 or higher).
So, no, earthquakes are not increasing as a sign/symptom of the impending end of the world.
Update March 1: 2012hoax has a nice page showing how recent quakes fit into these statistics, including Haiti, Chile, and the one in Illinois a few weeks ago (which was really quite small — there are 130,000 quakes that size in any given year!).