I've seen discussion on this topic in the past, and was wondering what people's feelings were in regards to the more recent releases? Mainly, could it be possible to build a web application on the scale of, say, Amazon, or deal with similar bandwidth and load requirements as an iTunes would? It may be unfair to expect that much, seeing as these are some of the largest around, but would a setup of RoR scale to handle this and, if not, what are the limitations that prevent it from handling it?
Basically, I'm about to embark upon a large scale project and am weighing my options, and the small amounts of RoR I've developed with I've loved -- yet I just don't know how far it can go. Thanks for the input.