Just stumbled across this and found it interesting. Its Googles "AdWords" search which appears to give some rough statistics on what Google users are searching for.
I tried CCSVI, and it produced the following:http://www.google.com/insights/search/# ... 36m&cmpt=q
Interesting how it peaked in 2010, and ever since has slowly been falling...
It also shows the distribution around the world. I would of posted the picture, but my image hosting site appears to be having a bad day.
And this one to show how many searches per day/month on a specific "Key Word" https://adwords.google.com/o/Targeting/ ... earch.none
I typed in CCSVI (the other fields are required, but not really important, I just used $1 and $100)
If you then compare it to other terms, it puts it in perspective.
CCSVI = 110,000
Multiple Sclerosis = 1,500,000