Jollo.com is a website that relies on the long tail to find translations for common phrases in multiple languages.

Right now phrases such as "Je voudrais réserver une place près de la fenêtre, s'il vous plaît." are translated into Chinese, English, German.

It's a cool site - needs a bit of traffic and if it finds enough followers scale really well. It might need to get in touch with one of these old-school online dictionaries :)