Web Word Frequency Index

I'm looking for an index of word frequency across the web.  There are
many indexes of word frequency in written and spoken English. 
However, I'm looking for one that is on the web.  For instance, the
words "home" or "email" are much more common on the web than in spoken
or written English.  A good metric would be, for instance, how many
pages in Google's database have that word.  While I can do a search on
Google to find this, I'm looking for an index that won't require
manual searching each time.

These sites are not what you're looking for, but they are interesting:

2004 Year-End Google Zeitgeist - Search patterns, trends, and surprises
://www.google.com/press/zeitgeist2004.html
You can change the year in the URL.

The Top 100 
http://www.wordspy.com/topwords.asp

At wordspy, this page is closer, but includes phrases:
http://www.wordspy.com/index/index.asp

If you cut and paste the entire internet into the box here:


http://www.wordcounter.com/


you should get your answer.