Bill Venners interviewed by Chris Adamson at ONJava.com - Ruby the Rival:
"I don't know much about Rails other than that it has been well marketed. The Rails marketeers drummed one message over and over, that Rails helps you build web apps quickly. Everyone has received this message loud and clear. It was a very good job of marketing, in my opinion. I believe the message too, but getting a green-field design web app out the door fast is not the only concern people have. Integrating with legacy databases, scaling to a cluster of app servers, are also sometimes concerns, and in such cases other tools may be more effective than Rails."