The dialects are mutually intelligible, but not without some (however minor it may be, I'm not entirely sure) difficulty. However, a completely different spelling standard is used for Continental Norman than is for Jèrriais, and this could, in theory, cause some problems were speakers of continental dialects to desire to contribute to a "pan-Norman" wikipedia.
However, that said, I personally think that if there were Norman speakers around who wished a wikipedia, they would be fine joining a Jèrriais wikipedia. One comment I once read is that one (continental) Norman speaker did not believe there was anything left of their language apart from Jèrriais… (and another was absolutely thrilled to read that an American [me] was learning "their language" (though I was learning Jèrriais, not continental Norman))
At 05:54 PM 11/13/2005, you wrote:
It may not be an issue if there are not many speakers of Continental Norman, but are the dialects mutually intelligible, at least in written form? That is, if at some point in the future some Continental Norman speakers wanted a Wikipedia, could they coexist in one Wikipedia, as British and American English do, or would a second Norman Wikipedia have to be created?