I'm curious if there is a benefit or best practice with regards to using the localized language on international sites (with specific ccTLDs).  For example, should my french site (site.fr) use the french language as keywords within the URLs or should they be in english?

e.g. www.site.fr/nourriture  vs. www.site.fr/food

Is that considered best practice for SEO (or just for brand perception those markets?).  Is there a tangible loss in SEO if we do not use the correct language for those URLs and just stick with English around the world?

I recall seeing a Matt Cutts video on the topic and he said that google does support i18n URL's but other SE's might not support them as gracefully but he didn't come down with a hard recommendation to go with i18n URL's or just English.

Would love a strong ruling in favor one direction based on best practices.