We are a software firm based in India. We are a 100% FOSS firm and RoR is one of the core focus areas.
We contribute to RoR (and FSF)in various ways - code as well as cash donations. We also publish some how-tos and tech issues on our blogs.
We are running a production server on AWS. Here is the howto for REE + passenger + AWS + EBS
You can read the full howto here: http://docs.google.com/Doc?id=dcn2ckbh_21gznbbjhr
The tutorial on our blogs:
There is also a how to run it with Mongrel in an older post.
The how-to is released under FDL. You can use/publish as you see fit.
Thanks, kc K. C. Ramakrishna www.rknowsys.com kcr at members dot fsf dot org