Shauna Kelly shared this with us in microsoft.public.word.newusers:

Hey, shouldn't some sociology student somewhere out there write his
paper on this subject?

Don't think it hasn't been done! See, for example:
http://research.microsoft.com/resear...pe=Technical%2
0Report&id=500

http://research.microsoft.com/~jchay...rs/cluster.pdf

I read some, and my first reaction is:

keanu
Whoa!
/keanu

The weird thing is, I understand most of it... which I don't
understand... *boggle*

--
Amedee Van Gasse