Yes, it seems you are intensely curious, TRex. Just lucky for you that I'm quite fascinated by statistics myself.
There are 34,706 common words, and 106,945 words in total. A lot of these words will probably never be part of a puzzle, simply because there is no suitable nine-letter word containing all their letters.
There are 5,210 nine-letter words that I consider to be familiar enough to generate puzzles from. However, some of these will never be used because they would allow too few words in a puzzle. (And some will only ever be used in "Your puzzles" because they make too many words for a daily puzzle.)
The following figures are for all "hits" on the site. Because of the way Chihuahua is implemented, each word played generates a hit, so the people who spend more time on the site are more strongly represented in the figures, although I doubt it would make much of a difference.
Browsers -
IE6 24%
IE7 35%
IE8 10%
Firefox 24%
Safari 4%
Opera 1.9%
Google Chrome 1.5%
Operating systems -
XP 64%
Vista 23%
Windows 2000 3%
Mac OS X 8%
Linux 0.7%
Countries -
See attached chart. Right-click on it and select "View image" to see it full size. (The Web statistics package I use infers these from IP addresses, which I believe is not totally reliable)
I do have some figures on screen resolution, which I'll dig out for a later post.
Pat, I'll answer your question in a later post,too, but if I said there were puzzles where nobody got the nine-letter word, I'm a fool. But I think what I might have said was that there were a few puzzles where nobody got a rosette. But I think that might be incorrect too - I think I'd been wrongly analysing the records. Anyhow, I'll come back to this question shortly.