Lack of Authorship/Editorship Information in Encyclopedic Wiki Entries
All what one finds in wikis are IP addresses and nicknames. The lack of clear and complete authorship/editorship information attached to each entry, including authors/editors' affiliations and credentials, is a very serious quality issue encountered in most wiki-based encyclopedias these days (not just OrthodoxWiki). There are no built-in wiki mechanisms or policies to enforce the presence of such metainformation in every article.
Problem with Citations
Citing a wiki page in your work can also be very tricky (unless one uses the new 'permanent link' feature in MediaWiki to point to a specific revision of that page). A page might significantly change and become a totally different article than the one you were originally referring to (while still maintaining the same URI).
Some Related Links
As far as Wikipedia is concerned, they explicitly state "a direct link back to the article satisfies our author credit requirement" (wikipedia:Wikipedia:Copyright). I think we should adopt the same explicit policy (and to this end, the "click through" language has recently been revised. I agree about the permalinks -- that's why I'm now recommending that the link to the original article go to the version permalink rather than the article itself (although I'm not requiring it since Wikipedia does not require it for compliance).