It's important to remember that Ruby and Rails are not the same thing. Ruby has a lot of very nice features, but a slow-ish runtime (JRuby & IronRuby might be

It's important to remember that Ruby and Rails are not the same thing. Ruby has a lot of very nice features, but a slow-ish runtime (JRuby & IronRuby might be a different matter). As for a Ruby bubble (as opposed to a Rails bubble), I doubt it as there is now quite a community (and a loyal following of prag devs) around the language itself. Rails is one of many interesting frameworks getting around these days (another worth a look is Python based Django). As the framework matures the hype bubble will burst, but Rails has some way to go before obscurity.