You gotta be fricking kiddin' me with that link. If he's responsible for Tunguska he's the greatest mind of all time.
OTOH, there are still many things to test HAARP on.
Earthquakes? There was the Bam, Iran one.
Weather modification? Katrina.
Other uses, other than really over the horizon radar are geosurveying (finding TROP caves), removing induced radiation belts around the Earth, etc.