I recently discovered LingQ (via a video from lingosteve on YouTube), and I use it to study English and Japanese.
For the English lessons I can select dictionaries like the Longman (to get definitions instead of translations), but for the Japanese lessons it seems that a good Japanese-Japanese dictionary is missing in the list of available dictionaries. Would it be possible to add one?
IMO, Weblio (JP-JP) would be a very good choice. Weblio’s definitions and examples come from the 大辞林, an excellent Japanese dictionary.
Here is the URL:
Hope you can add it in the near future (though I know it’s a lot of work). :-)