First of all I like to say that I love Wikipedia! Wiki's are cool, Encyclopedia's are cool and things that are free are cool! :)
The only thing I find weird about wiki's is that everything is identified with names and not numbers. I would think that using names slows down the system tremendously. And nowadays no application lets the users choose their own indentifiers, so why should a wiki do so?
That is one of the reasons I started to build woovi. Woovi is an object oriented database currently build on top of a normal rdbms. Maybe one day I can create a [[woovi]] link here, but I feel that is not up to me ;)
If you want to know more of me (which I highly doubt) you can take a look at my blog.