[lstamour]

At a glance, there are perhaps 1400 gems that require or refer to ffi: https://www.google.ca/search?q=ffi+inurl:gemspec

But that's the type of site I was trying to find before I resorted to Google. I'd second that recommendation to add the functionality to rubygems.org ... Maybe we need a pull-request? :)

[sqs]

I will probably eventually submit a PR for this feature at https://github.com/rubygems/rubygems.org. If anyone else wants to get it started, I'd certainly help.