Wikipedia now has more than 50,000 pages (28,000 articles), and the 1,000 most recent changes were made in the last 5 days.
But is there any way to judge/measure/monitor the quality of the contribution as volume grows? Are new articles still written on new topics of general interest, or do more and more cover obscure topics? Do more duplicates appear? Is there any way to tell from statistics?
I guess the number of different authors that a new article attracts in its first three months could be an interesting statistical measure.