Ever wonder what we talk about here? I just finished a word frequency study of this site. I counted the number of pages that contained any particular word. These are the top ten frequently occurring words of at least six letters.
category
people
because
should
software
things
programming
something
really
system
The count is the number of pages upon which the words can be found. Here are all 354 words that appear on at least a thousand pages.
Interesting, eh? -- Ward Cunningham
Have Wiki Names been filtered from this list? -- Stijn Sanders
No, their parts are treated as separate words so Programming Language counts as one for Programming and one for Language.
It looks like they confirm the topic of the Wiki as People Projects And Patterns. Structures, systems, patterns, problems all score highly.
Following the example of Wiki Word Statistics, we find in this list some of the Extreme Programming practices:
always * little * change (Incremental Development)
working * someone * enough (Forty Hour Week)
understand * interesting * problems (Spike Solution)
making * common * source (Collective Code Ownership)
everything * changes (Re Factoring)
approach * specific * examples (User Story)
[not] complex * unless * necessary (Do The Simplest Thing That Could Possibly Work)
research * meaning * actual * coding (Spike Solution)
client * involved (Onsite Customer)
some Anti Patterns:
author * against * various * testing
projects * control * programmers
an observation:
practices * delete * values
finally, for the Smug Smalltalk Weenies:
smalltalk * created * technology
This was just crying out for a bit of Poem Wiki. downlode.org 
-- Earle Martin
I've looked into BNC (British National Corpus, which is one of the largest English corpus in the world) word frequency list at www.itri.brighton.ac.uk (Broken Link) try (www.natcorp.ox.ac.uk ) and chose those with at least six letters and listed the top ten:
should
people
because
between
through
become
government
system
number
however
Compare this list with the one above. (One of the interesting things to notice is that "system" is a very common word in general English written or spoken.)
-- June Kim
Search Corpus (BNC)
For word used (simple search)
See original on c2.com