Well, some days ago Gerard told me that somebody on IRC said to him that WiktionaryZ, since it is not a Wikimedia Foundation project, is not Open Content ... well that is completely wrong.
Fact is that we would like very much to see WiktionaryZ in the Wikimedia foundation. Fact is that we were told by the foundation that they do not have the technical means to fulfill the requirements for Wiktionaryz (among others 24*7 uptime and adeguate backup procedures). Hosting WiktionaryZ will cost quite a lot in terms of financing ... well: therefore we need partners. But we do not only have financial partners - we also have many partners thanks to their contributions in terms of contents.
Our license is the same as the one the Wikimedia Foundation uses: GFDL and in addition, to allow for easier sharing of data in the form of dumps - may they be bilingual dictionaries or multilingual dictionaries of specific themes or the whole contents - the CC-BY license.
So: there are two very clear points - or better three. Yes, we would like to be within the Wikimedia foundation if that was technically possible. Unfortunately there is the lack of the technical possibilities to be hosted on the Wikimedia Foundation's servers and therefore: yes, we want to co-operate closely. We are indeed Open Content since we use adeguate licensing. Whoever says the contrary simply is wrong.