I crossed your tread today on july 6, 2010 because I was researching this humming again. I've heard it more and more often and at different frequencies; I judge them on a scale of 1 to 10 ten being the worst; Today it is about a 10 for me it began back in 2004,I use to keep notes on the dates and times it would start and stop. Funny-odd it is happening today on the day of the Israel peace talks, and the same day the Queen is in New York. I believe this sound is the earthquake machine called "H.A.A.R.P." in Alaska. I researched this technology by Tesla and what the Russians did to the U.S. embassy in Germany with thier own small type of machine. Causing many to suffer and have low levels of ceritonin in the brain waves thereby causing mass depressions; this is all documented. But mostly I believe the oil mess is not just a mess in the gulf but a tear in the earth and crack which could have been fixed but some are trying to exploit and will use the haarp to spit the states up the mississippi, and put america into a "state of emergancy." In my family I am the one who had metal in my teeth at a young age I believe this is why I am picking up the reception of the buzz also while others in my family too, are unable to hear it. No I don't have Tennitus either. This is what I look for, High altitude chemtrail spaying, the chemical has bromium aluminum in it, the micro wave from haarp uses the little gathered metal to bounce and pinpoint from to hit. or bounce to another area. think banking a pool ball off the sides of a pooltable to get it into a certain pocket. Anyway I must say the use of it is radically wrong to us whom suffer the barage of constant bulling.