Google Groups : comp.lang.lisp: "Is Lisp ready to become popular?"
For me there are a few things that I need for any language to become my tinker language. A good reference that's online and offline. An editor, and a windows binary and a linux binary. Oh and if it's really going to get my attention it needs a schtick. Most of the time it is something like, well, an RSS library made by some other developer. It doesn't have to be part of the language proper, just something that I can go "Hey, you know I could cook up a distributed file pushing system with these three modules".
Oh and how fast can I "Hello World" something together. You know what I'm talking about, the ability to take some STDIN read it all in, parse and manipulate and spit the changed form back out.