As William Gibson said, "The future is already here — it's just not very evenly distributed." -- Louisville is one of the places where the future arrives late, and sometimes you have to do a little pushing to get it to come around.
You might consider showing up at a KYOSS meeting (
http://kyoss.org/). KYOSS is the Kentucky open source society, which started as the amalgamation of the Linux meetup and PHP meetup on
meetup.com. Meetings are held on the second Wednesday of the month, i.e. this Wednesday. We usually have a few Ruby folk there.
The meeting is held at LVL1 (LVL1.org), which has its own brand of weird and wonderful geeks, they have open build night every Tuesday evening, you might find some Ruby programmers there who don't intersect with KYOSS. Finally, there's MOSSCON coming up on May 18-19, which is Louisville's first open source conference.
Bottom line, there are Ruby/ROR programmers out there, but they're not organized in any way, and you may have to start pulling a few threads in order to find them. I'm definitely interested, should a meeting coalesce.
--Barton