Hi, 

I would like to know how people use files on their computers.  I am
interested in both consumer and corporate environments.  I've had
little luck finding anything in the ether of cyberspace so your help
would be greatly appreciated.

I would like to know as many kinds of statistics as possible about
users' files.  Specifically,

- How many files does an average user have on his/her system?

- What fraction of these files live on the system volume, other
volumes, removeable storage, NAS boxes, etc?

- On a windows PC, what percent lives in My Documents?  How about
under Desktop?  If not these, then where?

- What are the top dozen file types by popularity? (e.g. mp3, mpeg, wma, etc.)

- What are the relative percentages of these file types on an average system?

- Historically, what are trends in this?  For example, since 1995, how
has this information changed (i.e. MP3 became the most common type in
1999, 12% of files on PCs were MP3's, etc.)  I don't need to know
every year, or even necessarily start at 1995, but some reasonable
trending would be great.

- What percentage of files are compressed on users' machines?

- What percentage are encrypted?  How about encrypted only using
Microsoft's EFS on NTFS?

- How many redirected My Documents to an offline server are out there
percentage wise (this is interesting for Client Side Caching
statistics)?

- How many users actually use Roaming User Profiles (I ask this since
it implies file ghosting which I also care to know)

- How do consumers use Flash Drives/ZIP drives/etc. for file storage? 
How about for backup?

Answers to the above questions and any additional statistics,
information, links related to the above questions would be a great
help to me.

Thanks,
Ben