Mark had me crunch some of the download numbers for Rails gems; then Rich took the spreadsheet I came up with and summarized it nicely:
Looks like the pace of downloads is picking up! Here are the monthly total for Rails 2.2.2 so far:
Note that there are many caveats here - this doesn't account for folks who run local gem servers, for folks who get the gems from other places, for folks who roll their own, etc., etc. But, still. Also, since my SQL skills are weak, here's a reminder for me of how it was done so I can Google this up and run it again next year: