Qk.ly: http://bit.ly/gssxEsp
Half a billion people speak Spanish, so it's certainly a language to learn.
Once you do so, you can more or less cover South America, unlike Feynman.
Learn
Duolingo kicked off with Spanish:
A study at the end of 2012 found that Learning Spanish With Duolingo Can Be More Effective Than College Classes Or Rosetta Stone. Here's a PDF of that study.
You can quickly translate from Spanish to any other language here.
Blog posts that inspire me
Here are some of them:
Movies that i enjoyed
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