on a more abstract, cultural note, I'd like to expand on something I've said here before, about programs.
I think the idea of a "software component" is a wrong and damaging distraction from a fundamental fact: program text is the ultimate component technology.
the text of free programs can be read, indexed, searched, edited, copied and pasted, translated from one language to another, paraphrased, commented, printed out for posterity, machine analyzed and machine transformed. that is far more than any other "component" technology (COM, .NET, java beans, CORBA) has ever permitted, and more I suspect than any ever shall.
after speech, text is the deepest, oldest, and most powerful human language technology. free software has grown strong because it treats text as an ally. a new user has a ton of code to read. a ton of examples. command interpreters which respond to single words. tools which speak and can be spoken to. when you want to learn how a system works in free software, you can read through it, edit it, perturb it, tinker directly with the text. if you need to find something, you run grep, use TAGS, ask google, use LXR or global. when someone wants to explain something they can mail you code. you can buy a book on algorithms and see how things are written.
the web too has flourished due to treating text as an ally: page source can be viewed, rendering happens on the fly, markup is minimal and mixed in with plain written text codes. screen scraping may be embarassingly "low tech", but think honestly about some of the wild, out-there programs which people have actually got working using the web's text, and imagine trying to coax a distributed OO system to do the same thing. imagine even agreeing on the interface. it would never happen.
I think arguments about programming language are of trivial importance compared to the argument about text vs. black-boxes. we should always remember the primacy of text. you can translate between the text of different languages (or auto-stub, or what have you) but you're doomed if you have no text.