Editing synonyms for an anime I added (tested on Ahita no Yukinojou, anime id 1510) results in a web site with the text "ERROR - ACCESS DENIED" on it. Deleting them and adding a new (corrected) synonym works, though.
Editing synonyms for an anime I didn't add doesn't work, either, even if I added the synonym. I didn't find a way to do a CReq which would change the synonym, either.
(The second problem is the reason why "Aishimai" now has two japanese titles, one with the kanji for "Love" ("Ai") as the first kanji, and another where I made a typo
