From Wiktionary
Babel user information
en-N This user has a native understanding of English.
simple-4 This user has near native speaker knowledge of Simple English.
de-2 Dieser Benutzer beherrscht Deutsch auf fortgeschrittenem Niveau.
es-1 Este usuario tiene un conocimiento básico del español.
Users by language

I am not very active here at the moment. However, when I am around, I'm going to be trying to work on w:Category:Articles with broken Wiktionary links, which has a backlog of over 120 articles.