I think this is completely wrong. You previously posted Wikipedia's definition of Wikipedia, NOT a wiki. A wiki is simply a type of software. Here is Wikipedia's definition of a wiki:
"A wiki is a page or collection of Web pages designed to enable anyone who accesses it to contribute or modify content, using a simplified markup language. Wikis are often used to create collaborative websites and to power community websites."
Just because Wikipedia = Wiki does not mean Wiki = Wikipedia.
The term Wiki, at least by my experience, is much more associated with the concept of collaboration as opposed to being a definitive resource.
I also don't see why I site needs a disclaimer to describe everything it isn't. Should there be a disclaimer on the home page explaining that the term Transformer is not referring to an apparatus for reducing or increasing the voltage of an alternating current, as that is the truly commonly accepted definition of Transformer.
This helps explain things. It certainly would explain why you received no explanation for your addendum's removal. How would you be contacted? In my experience, in virtually any online context: wiki edits, blog postings, etc., anonymity immediately discounts any potential quality in the content for many reasons, including its lack of accountability and the inability for it to be followed up.