Board Thread:General Discussion/@comment-74.213.78.53-20151227061510/@comment-3474542-20151227073141

Technically, they handle all forms of vandalism, not just spammy links. However, if you don't feel that the blogs are spam, the best approach may be to politely approach the person and gently suggest that they change the language of their blog to English or move it to Japanese Wikia Central.