Has anyone made a real conlang?

It seems to me that most of the languages discussed
in this mailing list are not languages at all, but
names of languages that exist only in the imagination
of the person who invented the names. I doubt a
language can be used for simple everyday communication
unless it has a vocabulary of at least 1000 words.
Has  anyone in this mailing list made a real conlang?

Making a real language is a huge effort, almost like
building a pyramid. Team work is a necessity, and yet
there is not much team work among the conlangers.
Linux programmers have the opposite mind set - they
love to work together, and often improve work of
others instead of reinventing the wheel. Perhaps the
reason for the difference is that the Linux programs
are tools, while the languages discussed here are as
useful as the pyramids. The main purpose of the
pyramid is to say "My unique pyramid is sky high
and made of white marble. I do not share it with anyone."

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