some info about a new site: (のうべん-和英辞典 Japanese English Dictionary
Nouben is a site intended for those who would like to learn Japanese and improve their Japanese language skills. Based on the principle of give and take, users are expected to help other members in order to receive help. Each member will be credited for any participation including adding examples or words, suggesting kanji mnemonics, answering questions, etc.
Nouben also features a built-in dictionary which is filled with data gleaned from Jim Breen's wwwjdic project and other free resources such as Tatoeba Tatoeba: Collecting example sentences
Additionally, we have extended these materials and added new features to provide an experience which is not available anywhere else on the internet!
Most common words in Japanese here
Lists of kanji (grades, JLPT N1 - N5) here
Printable edtions of the above lists
I hope you enjoy it