Links - Language learning

Similar to Google Translate, but instead shows its sources, allowing for refined choice of words.

Google Dictionary (Chrome Extension)
For instant translation of single words and short phrases.

StackExchange's language sites
E.g. English, Chinese, Spanish, French, Russian, Portuguese, German, Korean, Japanese, Italian, ...
Or search for proposed language sites at Area 51 and support them by voting up example questions (and following)!